Question

mrs. mayorga hands out stickers to her students. she started the week with 250 stickers, and at the end of the week she has 120 stickers remaining. what is the percent decrease in the number of stickers?

Explanation:

Step1: Find the number of stickers given out

The initial number of stickers is 250 and the remaining number is 120. So the number of stickers given out is $250 - 120=130$.

Step2: Calculate the percent - decrease formula

The formula for percent decrease is $\text{Percent Decrease}=\frac{\text{Original Amount}-\text{New Amount}}{\text{Original Amount}}\times100\%$. Here, the original amount is 250 and the amount of decrease is 130.

Step3: Plug in the values and calculate

$\text{Percent Decrease}=\frac{130}{250}\times 100\%$. First, $\frac{130}{250}=0.52$, then $0.52\times100\% = 52\%$.

Answer:

52%