A part-whole percent question gives you a share of a total and asks how many are in that share. First identify the whole, the group that counts as . Then type the stated percent of that whole into Desmos. Be careful not to count the leftover group when the question asks for the named group.
Hints
- Hint 1
The whole is the group counted as in a percent statement. Here, the percentage is taken from all the shoes in stock, not from a smaller group. How many pairs are in that whole?
- Hint 2
A part is the share of the whole you want to count. The word of tells you which amount to take the percentage of. Keep the percent sign when you enter that relationship in Desmos.
Step-by-step
Find the percent of the total
Step 1Identify the whole and write the relationship
All pairs are the whole, the group counted as . Let be the number of sneaker pairs. The problem says sneakers are of the shoes, so take of the whole:
- Step 2
Calculate the sneaker pairs
Type into Desmos. It prints , so the store has pairs of sneakers. The other pairs aren't what the question asks for. Choice B.