Kylie and Penelope had the same number of problem sums to do. Kylie did 10 problem sums per hour. Penelope did 7 problem sums per hour. When Kylie finished doing all the problem sums, Penelope still had 24 more problem sums to do.
- How many hours did Kylie take to finish all her problem sums?
- How many problem sums did Kylie have to do in total?
(a)
Number of extra problem sums that Kylie did per hour
= 10 - 7
= 3
Number of hours that Kylie took to finish all her problem sums
= 24 ÷ 3
= 8
(b)
Number of problem sums that Kylie had to do in total
= 8 x 10
= 80
Answer(s): (a) 8; (b) 80