Three colleagues spent a total of $68. Erika spent $11 more than Winnie and Abi spent $10 more than Erika.
- How much money did Winnie spend?
- How much money did Abi spend?
(a)
Amount that Winnie spent = 1 u
Amount that Erika spent = 1 u + 11
Amount that Abi spent = 1 u + 11 + 10 = 1 u + 21
Total amount that they spent
= 1 u + 1 u + 11 + 1 u + 21
= 3 u + 32
3 u + 32 = 68
3 u = 68 - 32
3 u = 36
1 u = 36 ÷ 3 = $12
Amount that Winnie spent
= 1 u
= 12
(b)
Amount that Abi spent
= 1 u + 21
= 12 + 21
= $33
Answer(s): (a) $12; (b) $33
