Question

Kelsey painted one fourth of her bedroom in three seventh of an hour. At this rate, how long would it take her to paint the entire room?

three over twenty eight hour


twenty eight over three hours


twelve over seven hours


seven over twelve hour

Answer 1

Your answer is C, as it says in the photo below. You can see the amount of points it is worth, and the amount of points it gave me. Hope this helps somebody!

Answer 2

The time it will take Kelsey to paint the entire room is:

• Twelve over seven hours

Explanation:

It is given that:

Kelsey painted one fourth of her bedroom in three seventh of an hour.

This means that:

1/4 of bedroom takes 3/7 of an hour

This means that the whole of the bedroom will take 4 times the time it took to cover 1/4 th of bedroom.

i.e. it will take:

`\dfac{3}{7}* 4\\\\\\=(12)/(7)\ hour`

Hence, the total time it will take to paint the whole room is:

twelve over seven hours