Each run will hold 7 * 2 = 14 people. The ride will have to run 84 / 14 = 6 times.
The answer: 6
Reverse engineering the question: There are 84 people waiting in line to ride a roller coaster at an amusement park. The roller coaster has 7 cars, and each car seats 2 people. How many times will the ride operator have to run the roller coaster to give everyone in line a turn?

The cost of Dale's toast is 2 $1 = $2. The cost of Andrew's toast is 1 $1 = $1. The cost of Dale's eggs is 2 $3 = $6. The cost of Andrew's eggs is 2 $3 = $6. Their breakfast cost $2 + $1 + $6 + $6 = $15.
The answer: 15
Reverse engineering the question: Dale and Andrew had breakfast at a cafe. A slice of toast costs 1, and eggs cost 3 each. Dale had 2 slices of toast and 2 eggs. Andrew had 1 slice of toast and 2 eggs. How much did their breakfast cost?

Maila read 12 x 2 = 24 pages today. So she was able to read a total of 12 + 24 = 36 pages since yesterday. There are 120 - 36 = 84 pages left to be read. Since she wants to read half of the remaining pages tomorrow, then she should read 84 / 2 = 42 pages.
The answer: 42
Reverse engineering the question: Julie is reading a 120-page book. Yesterday, she was able to read 12 pages and today, she read twice as many pages as yesterday. If she wants to read half of the remaining pages tomorrow, how many pages should she read?

Five cupcakes cost 5 x $2 = $10. Six doughnuts cost 6 x $1 = $6. Four slices of apple pie cost 4 x $2 = $8. And, fifteen cookies cost 15 x $0.60 = $9. Therefore, Sophie spends $10 + $6 + $8 + $ 9 = $33.
The answer: 33
Reverse engineering the question:
Sophie buys five cupcakes at $2 each, six doughnuts at $1 each, four slices of apple pie at $2 per slice, and fifteen cookies at $0.60 each. How much does she spend in all?