Question
Pipe 'A' is 3 times as efficient as pipe 'B'. Pipe 'C',
which is one-third as efficient as pipe 'B', can fill a tank alone in 36 hours. Find difference between time taken by pipe 'C' to fill 25% of the tank and time taken (in minutes) by pipe 'A' to fill the tank completely.Solution
Let the efficiency of pipe 'C' be 'x' litres/hour.
So, total capacity of the tank = '36x' litres.
Efficiency of pipe 'A' = x × 3 × 3 = '9x' litres/hour
So, time taken by pipe 'A' to fill the tank = 36x / 9x = 4 hours
And, time taken by pipe 'C' to fill 25% of the tank = (36x × 0.25) / x = 9 hours
So, required difference = 9 - 4 = 5 hours = 5 × 60 = 300 minutes
The first number is four times 60% of the second number. If the second number is increased by 5, the first number becomes twice the new value of the sec...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 30 and ratio of the 4th and the 5th number is 2:3. If difference between t...
If (64)2 – (36)2 = 20Z, the value of z is
25% of a number exceeds 1/6th of the same number by 7. What is the number?
'N' is the largest three-digit number which leaves 5 as a remainder when divided by 6, 9, and 15. What is the smallest number that needs to be added to ...
Range of the given data 23,19,16,17,21,9,18,6.
Find the remainder when 2⁵ is divided by 7.
- A fraction 'k' is such that when it is subtracted from (6/7), the result is (2/5). What will be the remainder when the denominator of 'k' is divided by its...
Find the value of 'a' in the given data if the mean of the given data is 20.
10, 15, 18, 22, 24, 19, 21, a, 16, 25
Find the smallest number that is exactly divisible by 6, 8, and 9.
Relevant for Exams:
