Question

solve this question...

Answer 1

15)
tank filled by A inlet in 1min= 1/8
and by B = -1/12
by both in 1 min=(1/8)-(1/12)=1/24
and the time taken to fill the tank =24 min
16)
8 taps time take = 90 min
1tap time takes= 90*8=720min
17)
tank filled by A in 1 hr= 1/3
,by B = 1/4
and by C= -1/6
by A+B+C in 1 hr = 1/3+1/4-1/6 =5/12
so time taken to filled the tank by all = 12/5 hrs
12taps time take = 720min/12=60 min