Three classmates spent a total of $76. Zara spent $8 more than Zoe and Olivia spent $9 more than Zara.
- How much money did Zoe spend?
- How much money did Olivia spend?
(a)
Amount that Zoe spent = 1 u
Amount that Zara spent = 1 u + 8
Amount that Olivia spent = 1 u + 8 + 9 = 1 u + 17
Total amount that they spent
= 1 u + 1 u + 8 + 1 u + 17
= 3 u + 25
3 u + 25 = 76
3 u = 76 - 25
3 u = 51
1 u = 51 ÷ 3 = $17
Amount that Zoe spent
= 1 u
= 17
(b)
Amount that Olivia spent
= 1 u + 17
= 17 + 17
= $34
Answer(s): (a) $17; (b) $34
