A part-whole percent describes a group as a share of one total. When a table gives percentages for different groups and asks how many more are in one group, subtract their percentages, then take that difference as a percent of the total in Desmos. Don't stop at the percent difference: the question asks for a number of tickets.
Hints
- Hint 1
Each ticket type is a part of the same whole: all tickets sold. Because the adult and child percentages have the same base, you can subtract them. What percent of all tickets is the difference?
- Hint 2
A percent is a share out of , not a ticket count. Take the difference in percentages as a percent of the total number of tickets to find how many more adult tickets were sold.
Step-by-step
Find the difference in shares
Step 1Subtract the adult and child percentages
Both table percentages use the same whole: all tickets. Subtract the shares because they use the same whole. Subtract the child share from the adult share:
That's the extra share of all tickets, not tickets.
- Step 2
Convert the extra share to tickets
The extra share is of the tickets. Type in Desmos. It shows , so 264 more adult tickets than child tickets were sold. Choice C.