Question is in the description.

Question

Peter and John make an apple-eating contest. Peter starts competing 3 hours before and eats 35 apples per hour, while John eats 24 each hour. If they ate 518 apples in total, the amount of apples that Peter ate was?

Answer 1

To find the amount of apples Peter ate, first put into the table the number Peter ate each hour with the number John ate.

 

      peter john sub  running   amount

                     total  amount   left

1. 35   0      35   35         483
2. 35   0      35   70         448
3. 35   0      35 105         413
4. 35 24      59 164         354
5. 35 24      59 223         295
6. 35 24      59 282         236
7. 35 24      59 341         177
8. 35 24      59 400         118
9. 35 24      59 459           59
10. 35 24      59 518            0

tally
     350 168          518

John ate 350 total apples in 10 hours. John ate 168 apples in 7 hours.