Question

ms. yost has 20 boxes of markers. next year, she plans to buy 420% more boxes. how many boxes will she have in all? boxes

Explanation:

Step1: Calculate the number of additional boxes

First, find 420% of 20. The formula for finding a percentage $p$ of a number $n$ is $n\times\frac{p}{100}$. So, $20\times\frac{420}{100}=20\times4.2 = 84$.

Step2: Calculate the total number of boxes

Add the original number of boxes to the number of additional boxes. The original number of boxes is 20, and the additional number is 84. So, $20 + 84=104$.

Answer:

104