Question

Nadine saw that there was 4/5 of a pie left after their family picnic. Each slice of pie was 1/15 of the total pie. How many slices of pie are left?

Answer 1

Given:

4/5 of a pie left after their family picnic.

Each slice of pie was 1/15 of the total pie.

To find:

The number of remaining slices of pie.

Solution:

Let x be the number of remaining slices of pie.

Part of total pie in one slice = $\dfrac{1}{15}$

Remaining part of total pie in x slices = $\dfrac{1}{15}x$

According to the question, 4/5 of a pie left after their family picnic.

$\dfrac{1}{15}x=\dfrac{4}{5}$

Using cross multiplication, we get

$5\times x=15\times 4$

$5x=60$

Divide both sides by 5.

$x=12$

Therefore, the remaining number of slices of pie is 12.