Question

a fill a tank 5 h b fill a tank in 8 h and c inlet pipe remove 3.2 h a b and c open together how much tank fill in h​

Answer 1

Time taken by pipe A = 5 hr

Work done by pipe A =1/5

Time taken by pipe B =8 hr

Work done by pipe B = 1/8

Time taken by pipe C = 3.2 hr

Work done by pipe C = -1/3.2

= -10/32

Work done by pipe A+B+C =1/5+1/8-10/32

= 8+5/40-10/32

= 13/40-10/32

= 52-50/160

= 2/160

= 1/80

Time taken by pipe A+B+C = 80 hr