Question

Leah is a baker and is using some of her oil in a new recipe. Theshaded portion in the strip diagram below represents how much of heroil she is using in the new recipe. What percentage of her oil will shehave left after finishing the new recipe?( A percent unit question)

Answer 1

The shaded portion of a strip shows the amount of oil used in a recipe. It is required to find the percent of oil left after the recipe.

Notice that 4 out of 5 of the strip is shaded. This means that 1 out of 5 is left.

Hence, the fraction of oil left is:

$\frac{1}{5}$

Convert the fraction to a percentage by multiplying by 100%:

$\frac{1}{5}\times100\%=\frac{100}{5}\%=20\%$

The percentage of oil left is 20%