Postal or Sorting Assistants Model Paper 4 With Solutions

Question : 3 of 100

Marks: +1, -0

Two pipes can hill a tank in 10 h and 16 h respectively. A third pipe can empty the tank in 32 h. If all the three pipes function simultaneously, then in how much time the tank will be full? (in hours)

$7 11/21$
$7 13/21$
$8 4/21$
$6 5/14$

Validate

Solution:

(b) 10 hr A pipe—>1
16 hr B pipe —>1
32 hr C pipe —>1

1/10+1/16-1/32=21/160

160/21=7 13/21

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