8 pumps can empty a water tank in 42 hours. How many hours will 56pumps take to do the same work
Answers
Pumps Time
8 42 h
56 x
8 * 42 = 56 * x
( 8 * 42 ) / 56 = x
= 6 hours
56 pumps will take 6 hours to do the same work.
Answer:
Time taken by 56 such pumps to empty the tank = 6 hours
Step-by-step explanation:
Time taken by 8 pumps to empty a tank = 42 hours
We need to find time taken by 56 such pumps to empty the tank.
Let the time taken by 56 pumps to empty the tank be x
Pumps Time Taken
8 42
56 x
As the number of pumps are increasing so the time taken will also decrease. Therefore, It is an inverse variation.
⇒ 56 × x = 8 × 42
⇒ 56·x = 336
⇒ x = 6
Therefore, Time taken by 56 such pumps to empty the tank = 6 hours