Question

Three pipes x, y and z can fill the tank in 12 minutes, 18 minutes and 24 minutes respectively the pipe y is closed 3 minutes before the tank is full in what time will the tank be full

Answer 1

Answer:

84/13

Step-by-step explanation:

x=12 } { 6

y=18 } → 72 { 4

z=24 } { 3

=

13

y=4*3 = 12

72+12 =84

answer = 84/13