Question

A swimming pool is being filled with water at a rate of $1$ inch/minute. The owners started filling the pool at $6:00$ a.m. What time was it when the water got $6$ feet deep ? $(1$ feet $=12$ inches$)$

• A. $6:06$ a.m.
• B. $7:06$ a.m.
• C. $7:00$ a.m.
• D. $7:12$ a.m.

Answer 1

Answer: (D)

$7:12$ a.m.

In 1 minute pool is being filled=1 inch
Then in 60 minute pool is being filled=60 inch
$\because 12inch=1feet$
$\therefore 60inch=\frac{60}{12}=5feet$
remaining 1 feet means 12 inch that will take 12 minute .
So total time to fill the tank is 1 hr 12 minute
Hence tank will fill at 7:12 a.m.