Ques:- A is thrice as efficient as B and is, therefore, able to finish a piece of work 10 days earlier than B. In how many days A and B will finish it together?
Recent Answer : Added by Abhi Chatterjee On 2022-01-08 16:05:10:
Let n be the number of days it takes A and B, working together, to finish. And we know B=A+10 and B=3A, so:
3A=A+10
2A=10
A=5
Then B=15
So:
1/A + 1/B=1/n where n is the total amount of days. So:
1/5 + 1/15=1/n
3n+n=15
n=15/4 days
Ques:- Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers?
Recent Answer : Added by Admin On 2022-09-29 18:30:23:
Let x and y be the two numbers. And x > y.
Then,
x + y = 80—–(1)
y=80-y
Also,
x = 4y – 5
Solving the two equations,
80 – y = 4y – 5
85 = 5y
Therefore, y = 17
put the value of y in equation(1)
then
x+y=80
x+17=80
x=63
the numbers are 17&63
Ques:- 7394 – 1236 – 4652 = ?
Recent Answer : Added by soni On 2022-10-21 19:49:18:
1506
Ques:- A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once to see if the bulb is lit or not (this is not visible from the outside), how can you determine with which of the three switches the light bulb can be switched on?
Ques:- Whats your current posting?
Ques:- Diophantus passed one sixth of his life in childhood, one twelfth in youth, and one seventh more as a bachelor; five years after his marriage a son was born who died four years before his father at half his final age. How old is Diophantus?
Ques:- The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?
Ques:- What is more important to you : the money or the work?
Ques:- The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
Recent Answer : Added by Alisha Ravika Kar On 2022-08-14 16:43:27:
The number is greater than the number obtained in reversing the digits and the ten’s digit is greater than the unit’s digit
Let ten’s and unit’s digit be 2x and x respectively
Then, (10×2x+x)−(10x+2x)=36
9x=36
x=4
Required difference=(2x+x)−(2x−x)=2x=8
Ques:- Your favourite area of interest
Ques:- How many petrol cars in india?
Ques:- Two cars, 15 km apart one is turning at a speed of 50kmph other at 40kmph . How will it take to two cars meet.
Recent Answer : Added by Admin On 2020-05-17 11:59:19:
A is travelling at 50kmph, B is travelling at 40
kmph……..according to the formula
time taken to meet = distance between them
———————-
relative speed of two vehicles
so, time taken to meet= 15/(50-40)=15/10=3/2hrs
Ques:- Number Series 40,42,39,44,38,46,?
Recent Answer : Added by Admin On 2020-05-17 12:01:22:
37
Ques:- Who among the following has been won the title of Miss India Universe 2009 ?
Ques:- City A's population is 68000, decreasing at a rate of 80 people per year. City B having population 42000 is increasing at a rate of 120 people per year. In how many years both the cities will have same population?
Recent Answer : Added by Satya On 2021-05-28 08:49:36:
At 130 years.
Ques:- A train 300 m long crossed a platform 900 m long in 1 minutes 12 seconds. The speed of the train (in km/hr) is
A. 40
B. 50
C. 60
D. 70
Recent Answer : Added by Fatima On 2022-09-24 14:33:38:
The Answer is c
Ques:- Rajan borrowed Rs.4000 at 5% p.a compound interest. After 2 years, he repaid Rs.2210 and after 2 more year, the balance with interest. What was the total amount that he paid as interest?
Recent Answer : Added by Karan Chavan On 2022-03-13 16:35:27:
Ans 635.5
4000
1 year 5 % 200 rs int
Total 4200
2 year 5 % 210 ra int
Total 4410
4410-2210 = 2200
1 year 5% 110
Total 2310
2 year 5 % 115.5 rs int
Total 2425.5
Total interest paid
200 +210+ 110+115.5. = 635.5
Ques:- Why do you prefer for this job?
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:- “An army travels 50 miles long at a constant rate. A courier standing at the rear moves forward and delivers the message to the first person and then turns back and reaches the rear of the army as the army completes 50 miles. Find the distance travelled by the courier.”
Ques:- Which languages can you read, write and speak?
Ques:- A four digit number is to be formed using the digits 1 to 7 All digits of the number are different and repetition is not allowed.
1. How many such numbers can be formed ?
2. How many such numbers are divisible by 4 ?
Ques:- The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally ?
Recent Answer : Added by Vivek verma On 2021-08-25 14:15:38:
let no of boys in group is = x
then total sum = 30 * x
after joining one more boys with a weight of 35 kg the total sum is = 30x + 35
after joining the new student the weight will increase 1 kg
so total sum
30x + 35 = 31(x+1)
x = 4
Ques:- There N stations on a railroad. After adding X stations on the rail route 46 additional tickets have to be printed. Find N and X
Recent Answer : Added by Rishabh Gupta On 2022-03-09 16:33:47:
Each PAIR of stations means a PAIR of tickets (A to B and B to A)
23 is a prime number with only two factors, 1 and 23
so N = 23 and X = 1
Ques:- What are your goals for the future?
Ques:- tell me aboutyour friends?
Recent Answer : Added by jeevi sireesha On 2022-11-29 17:07:02:
my best friend name is chandrakala. she is try to job.
Ques:- Give an example of a time when you assisted a co-worker to enhance their work skills?
Ques:- There are some chickens in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chickens and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30…
Recent Answer : Added by Admin On 2022-09-29 18:02:20:
answer : 36 –Explaination:
X= Chickens
Y = Qty per day
X*Y*9= 12 *.9 *Y*30
x=36
Ques:- If you could remove any of the 50 states, which state would it be and why?
Recent Answer : Added by Admin On 2020-05-17 12:01:45:
the qs here is talking about 50 states in USA.So if u remove
one from 50, which one would it be is the qs!!!
u should answer as either u would remove the state with
lowest population or state with less natural resources or
some thing else..
Let n be the number of days it takes A and B, working together, to finish. And we know B=A+10 and B=3A, so:
3A=A+10
2A=10
A=5
Then B=15
So:
1/A + 1/B=1/n where n is the total amount of days. So:
1/5 + 1/15=1/n
3n+n=15
n=15/4 days