Q17
A pipe can fill a tank in x hours and another pipe can empty it in y (y > x) hours. If both pipes are open, in how many hours will the tank is filled?
A.
(x - y) hours
B.
(y - x) hours
C.
hours
D.
hours
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Net part filled in 1 hour∴ The tank will be filled in