Question

Three taps X,Y and Z can fill a tank in 12 hrs, 15
hrs and 20 hrs respectively. If X is open all the
time and Y and Z are open for one hour each
alternately, starting with Y, then the tank will be
full in how many hours?
1. 10 hr
2. 6 hr
3. 8 hr
4. 7 hr
5. 9 hr

Answer 1

This is ur ans hope it will help you in case of any doubt comment below

Answer 2

hey mate it's your answer
your answer is 7 hr