Question

Using a pump, Mr. Paul takes 40 minutes to fill a tank with 1,600 gallons of water. In 10 minutes, he can fill gallons of water.

• A. 800
• B. 200
• C. 600
• D. 400

Answer 1

The correct option is D 400

$\text{Amount of water filled in 40 minutes}$
$\text{= 1,600 gallons}$

$\text{Water filled in 1 minute = 1,600}÷40$
$\text{= 40 gal}$

$\text{In 1 minute, 40 gal of water is filled.}$
$\text{In 10 minutes, water filled}$
$\text{= 10}\times \text{40 gal}$
$\text{400 gal}$

$\text{Hence, 400 gal of water is}$ $\text{filled in 10 minutes.}$