Question

Select the correct answer from the alternatives given against eal
1. A pipe fills a tank in 12 hours. The portion of tank filled in 9 hours is​

Answer 1

Answer:

First find it's work efficiency

$x = \frac{1}{12}$

Now fraction of work done in 9 days

$= 9x = 9 \times \frac{1}{12} = \frac{3}{4}$