Ques:- The average age of 12 students is 20 years. If the age of one more student is included, the average decreases by 1. What is the age of the new student?
A. 5 years
B. 6 years
C. 7 years
D. 9 years
Recent Answer : Added by DK On 2022-03-09 16:28:54:
Correct option is C)
Let be students are consider as child
Let the age of child added later be x years.
average age of 12 children =20 years
∴ Total age of 12 children =20×12=240 years
After one more child is added-
Average of 13 children =20−1=19 years
Average age of 13 children =
13
sum of 12 children+x
19=
13
240+x
⇒240+x=247
⇒x=247−240=7 years
Hence the age of child added later is 7 years.
Ques:- A garrison of 2000 men has provisions for 54 days. At the end of 15 days, a reinforcement arrives, and it is now found that the provisions will last only for 20 days more. What is the reinforcement?
Recent Answer : Added by swapnil On 2022-03-09 16:35:27:
1900
Ques:- What sort of decisions are easy for you to make? What sort of decisions are difficult for you to make?
Ques:- The price of sugar increases by 20%, by what % should a housewife reduce the consumption of sugar so that expenditure on sugar can be same as before ?(a) 15%(b) 16.66%(c) 12%(d) 9%
Recent Answer : Added by Rk On 2021-08-25 14:15:42:
(b) 16.66%
Earlier for ₹x we could purchase y gm of sugar.
Now we pay ₹1.2x for y gm of sugar
(As there was an increase in price so, x + 20%x = 1.2x)
At current rates for ₹x you can purchase y/1.2 gm of sugar
So the reduced consumption is y-(y/1.2)
Percentage change = (reduced consumption/ original consumption ) *100
That is (0.2/1.2) *100 = 16.66% (approx)
Ques:- Can you explain in one line why should we select you fromthe number of applications we have received?
Ques:- Motivation to shift from Delhi to Pune?
Ques:- 20% of (A) 6 litre solution and 60% of (B) 4 litre solution are mixed. What percentage of the mixture of solution is A?
Recent Answer : Added by Jack On 2023-04-21 15:58:12:
Mixture is 1.2 L of A + 2.4L of B which is 3.6L total. 1.2L / 3.6L = 1/3 (0.33)
Ques:- Complete the following series. 9, 11, 15, 23, 39, ?
A. 42
B. 56
C. 64
D. 71
Recent Answer : Added by Aakash P S On 2022-08-24 17:03:41:
71
Ques:- Ram was travailing back from his friend house in his old ambassador. He could only travel along at a steady 30 miles per hr and managed a paltry 20 miles per litere of fuel. At the start of the journey he has placed exactly 10 litre of fuel into a tank. He knew though that the fuel tank lost fuel at the rate of half a liter per hhour. As ram arrived home the car stopped because it had run out of a fuel and h only just made it. How far was his friends house from rams. a.200 b.150 3.210 d170
Recent Answer : Added by Admin On 2020-05-17 12:04:12:
Ans 200
that he will lost 1.5 ltr in an hour
so he will lost that 10 ltr in 10/1.5=6.67hour
distance travelled in 6.67 hour is=30*6.67=200 km
Ques:- A person meets a train at a railway station coming daily at a particular time. One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train.
Recent Answer : Added by DK BOSS On 2021-07-30 16:27:20:
Ans: 60 kph
Suppose Person meets the train everyday at 3 PM at Station A.
His speed is 12kph.
So normally he reaches 5 km before the meeting point (pt B) at (5/12 hr = 25 min before) 2:35PM.
But if he is late by 30 min, then he will reach that point (pt B) by 3:05 PM.
Train is traveling at its normal speed so it covers the distance of 5 Km in 5 min starting from Station A and reaches the meeting point (pt B) at 3:05 PM.
So speed of the train is 5KM/5min = 60 kph.
Ques:- Two men and three women working 7 hours a day finish a work in 5 days. Four men and four women working 3 hours a day complete the work in 7 days. The number of days in which only 7 men working 4 hours a day will finish the work is?
Recent Answer : Added by Amit On 2022-08-14 16:45:14:
5
Ques:- P, Q, R, S and T are five speakers who have to speak on a particular day, not necessarily in the same order. R is neither the first nor the last speaker. There are three speakers after S and three speakers ahead of T. If P speaks after Q, then who is the last speaker to speak?
Recent Answer : Added by narendra On 2021-12-25 15:45:41:
T is the last speaker.
Ques:- Can you describe for me a difficult obstacle you have had to overcome? How did you handle it? How do you feel this experience affected your personality or ability?
Ques:- Sanskriti Award 2006 for Literature has been awarded to?
Ques:- What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 20%?
Ques:- A shopkeeper allows 10% discount on the price of an article and sells it for Rs. 7,600. What is the market price of the article ?
A. Rs. 8,250
B. Rs. 8,500
C. Rs. 8,540
D. Rs. 8,415
E. None of these
Recent Answer : Added by fred.bayzada On 2022-09-15 16:36:14:
E non of those
Ques:- I participated in a race.1/5th of those who are before me are equal to 5/6th of those behind me. What were the total number of contestants in the race?
Ques:- If 5/2 artists make 5/2 paintings using 5/2 canvases in 5/2 days then how many artists r required to make 25 paintings using 25 canvases in 25 days?
Ques:- A train 100 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Recent Answer : Added by suhad On 2022-09-02 17:04:44:
32 Km/hr
Ques:- A man leaves office daily at 7:00 pm. A driver with car comes from his home to pick him from office and bring back home. One day he gets free at 5:30 and instead of waiting for driver he starts walking towards home.In the way he meets the car and return home on car. He reaches home 20 min earlier than usual.in how much time does the man reach home usually… ? GIVE THE STEPS PLZ…
Recent Answer : Added by Kalyani On 2022-08-14 16:43:07:
Since the car has met the person 20 minutes beforehand, it has saved 10 mins of a journey
A man has started 1.30 hrs before and the car has met him 10 mins before the actual time, he takes to reach daily is 1hr and 20 mins
Ques:- Tell me something about your family background?
Ques:- A company requires 11,500 strength.present employees are 200 women , men and 6500 unmarried To reach the target how many women required to maintain the same ratio?
Ques:- Why do u want to change the job?
Ques:- Give three things that you consider when looking for a job… And why? please do not include good salary…Thanks.
Recent Answer : Added by Vijaya On 2021-08-04 17:29:17:
friendly environment, supportive colleagues and place where i’ll have to work.
Ques:- What are your qualities for this job?
Ques:- What important goals have you achieved in the past year?
Ques:- 8 man work for 6 days to complete a work. How many men are required to complete same work in 1/2 day.
Recent Answer : Added by Srija On 2021-03-31 15:32:39:
Ques:- Why should I hire you from the outside when I could promote someone from within?
Ques:- A frog in a well 30 ft deep jumps 3 ft slips 2 ft each day.How many days does take on the whole?
Recent Answer : Added by Pat On 2023-04-26 17:34:54:
Day 1: 30-3ft = 27+2ft = 29
Day 8: 23 jumps 3ft = 20 slips 2ft = 22
Day 16: 13 jumps 3ft = 10 slips 2ft = 12
Day 24: 3 jumps 3ft = Out?
Ques:- How can u cut a big piece of cake into eight(8) pieces with only three cuts using a knife.
Recent Answer : Added by Admin On 2020-05-17 12:01:08:
Cake is never cut in such a way.
Wat we can do is.
1st cut should be cutting the Cake into two Halfs
Now put one half on top of other. Then again cutting it like
we made the 1st cut.
so now 4 parts. Two on top two on below.
Now Cut the cake in the orthogonal direction than the
earlier two cuts.
The trick was only That u can put one half on top of other.
Tats it.
Correct option is C)
Let be students are consider as child
Let the age of child added later be x years.
average age of 12 children =20 years
∴ Total age of 12 children =20×12=240 years
After one more child is added-
Average of 13 children =20−1=19 years
Average age of 13 children =
13
sum of 12 children+x
19=
13
240+x
⇒240+x=247
⇒x=247−240=7 years
Hence the age of child added later is 7 years.