Three colleagues spent a total of $100. Xylia spent $7 more than Zara and Emma spent $5 more than Xylia.
- How much money did Zara spend?
- How much money did Emma spend?
(a)
Amount that Zara spent = 1 u
Amount that Xylia spent = 1 u + 7
Amount that Emma spent = 1 u + 7 + 5 = 1 u + 12
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 12
= 3 u + 19
3 u + 19 = 100
3 u = 100 - 19
3 u = 81
1 u = 81 ÷ 3 = $27
Amount that Zara spent
= 1 u
= 27
(b)
Amount that Emma spent
= 1 u + 12
= 27 + 12
= $39
Answer(s): (a) $27; (b) $39