Question

Water is pouring into semi circular reservoir at rate of $50$ litre per minute. If volume of reservoir is $100$ litres. Find measure of hours it will take to fill the reservoir.

• A. $30$ hours
• B. $\frac{1}{30}$ hours
• C. $20$ hours
• D. $\frac{1}{20}$ hours

Answer 1

Answer: (B)

$\frac{1}{30}$ hours

Volume of reservoir $=100$ litre

Volume rate per minute $=\frac{100}{50}=2minute$

$=\frac{2}{60}=\frac{1}{30}$ hours.