Shannon and Yoko had the same number of problem sums to do. Shannon did 12 problem sums per week. Yoko did 8 problem sums per week. When Shannon finished doing all the problem sums, Yoko still had 40 more problem sums to do.
- How many weeks did Shannon take to finish all her problem sums?
- How many problem sums did Shannon have to do in total?
(a)
Number of extra problem sums that Shannon did per week
= 12 - 8
= 4
Number of weeks that Shannon took to finish all her problem sums
= 40 ÷ 4
= 10
(b)
Number of problem sums that Shannon had to do in total
= 10 x 12
= 120
Answer(s): (a) 10; (b) 120