Ques:- A husband and wife has a combined age of 91.the husband is now twice as old as his wife was when he was as old as she is now. How old are they?
Recent Answer : Added by Admin On 2020-05-17 12:04:21:
ans is C.
let H be present age of husaband.W be present age of wife.
H+W=91.
now let diff between their ages be x.that is H-W=x.
now when husband is W yaers old, his wife must be W-x years
old.and it is given that H=2(W-x). so 2W-H=2x. and H-
W=x.eliminating x we get 4W=3H. but H+W=91, so solving thse
two H=52 W=39.
Ques:- A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ——- days?
Recent Answer : Added by Admin On 2022-09-29 17:11:51:
A & B one day work= 1/18 + 1/30= 8/90
As we know that number of work is 1
1÷8/90= 1*90/8= 90/8.
Since they say “ twice the amount of work
Then ,2*90/8= 22.5 days
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Ques:- There are four dogs/ants/people at four corners of a square of unit distance. At the same instant all of them start running with unit speed towards the person on their clockwise direction and will always run towards that target. How long does it take for them to meet and where?
Recent Answer : Added by Admin On 2020-05-17 12:01:43:
They will meet at the center of the square…as the
direction vector of all the ants/people change according to
the first person.
The independent path of each person taken will be spiral in
nature.
Ques:- By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?
Recent Answer : Added by mathew On 2022-05-17 09:07:31:
20 %
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Ques:- A train covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 3x km.
Recent Answer : Added by Rakesh Keshri On 2021-09-07 17:39:41:
24kmph
time taken = x/40 + 2x/20
=> x=8
so, 3x = 24
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Recent Answer : Added by Soumya Rao On 2021-08-26 16:05:42:
Son in law
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Ques:- The smallest number when increased by ” 1 ” is exactly divisible by 12, 18, 24, 32 and 40 is:
Recent Answer : Added by Mahesh On 2021-07-30 16:30:08:
lcm (12,18,24,32,40) – 1
1440-1 = 1439
Ques:- A 180 meter long train crosses a man standing on the platform in 6 sec. What is the speed of the train?
Recent Answer : Added by Roopesh On 2021-06-15 17:06:46:
Which means the train will travel 180 m in 6 seconds so
We need to convert this into minutes
6×10 = 60s= 1 minute.
180×10 = 1800 m train will travel 1.8 km in 1 minute.
1.8×60 = 108 kmph
Ques:- A 1 Km wire is connected between N poles. If 1 pole is removed the distance between the pole increases by 2/3 of the original distance. How many poles are there?
Ques:- 40.83 x 1.02 x 1.2 = ?
Recent Answer : Added by Gowtham On 2022-09-15 16:37:20:
There should be 5(2+2+1) decimal places in the answer and the decimal place should end with 2(3*2*2=12) so the correct answer is a, no need for calculator. You can rule out all the other options because it does not satisfy this condition.
Ques:- There was a race between 3 people. Me, Doug and Anne. When I take 21 steps the distance covered is equal to Doug's 24 steps and Anne's 28 steps. I take 6 steps to every 7 steps of Doug and 8 steps of Anne. Who won the race?
Recent Answer : Added by Kalyani Nanaware On 2022-08-14 16:43:09:
Doug won the race
Explanation-
The ratio of steps covered by me, Doug, and Anne is = 6:7:8
Since Distance covered in Me 21 steps = Distance covered by Doug 24 steps = Distance covered by Anne 28 steps
LCM (21, 24, 28) = 168
For a distance of 168 units, the ratio of the distance covered in each step is;
= 8 : 7 : 6
Therefore the ratio of speeds is;
= 8×6: 7×7: 6×8
= 48 : 49 : 48
Here, the speed of the Doug is more than the speed of me and Anne
Hence, Doug won the race
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Ques:- Four sisters- Suman, Simran, Ruma and Seema are playing a game such that the loser doubles the money of each of the other players from her share. They played four games and each sister lost one game in alphabetical order. At the end of fourth game, each sister has Rs. 32. How many rupees did Suvarns start with?
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Ques:- A train 132 m long passes a telegraph pole in 6 seconds. Find the speed of the train
A. 70 km/hr
B. 71 km/hr
C. 72 km/hr
D. 79.2 km/hr
Recent Answer : Added by ABC On 2022-09-15 16:37:12:
79.2
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Ques:- Ratio between two numbers is 3: 4 and their sum is 420. What is the smaller number?
Recent Answer : Added by DHARANI R On 2021-08-26 16:05:51:
3:4
3x:4x
3x+4x=420
7x=420
x=60
smaller number=3(60)=180.
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Ques:- How long have you been here and how many years have you worked in UAE?
ans is C.
let H be present age of husaband.W be present age of wife.
H+W=91.
now let diff between their ages be x.that is H-W=x.
now when husband is W yaers old, his wife must be W-x years
old.and it is given that H=2(W-x). so 2W-H=2x. and H-
W=x.eliminating x we get 4W=3H. but H+W=91, so solving thse
two H=52 W=39.