- Have any questions?
- [email protected]
- Home
- Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr.
Question 1:
Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in A. 7.5 hr
Feedback Work done by all the tanks working together in 1 hour.
1/10+1/12-1/20=2/15
Hence, a tank will be filled in 15/2 = 7.5 hour
1/10+1/12-1/20=2/15
Hence, a tank will be filled in 15/2 = 7.5 hour
B. 8 hr
C. 8.5 hr
D. 10 hr
These questions are from this test. Would you like to take a practice test?