Three colleagues spent a total of $89. Dana spent $12 more than Cindy and Nora spent $8 more than Dana.
- How much money did Cindy spend?
- How much money did Nora spend?
(a)
Amount that Cindy spent = 1 u
Amount that Dana spent = 1 u + 12
Amount that Nora spent = 1 u + 12 + 8 = 1 u + 20
Total amount that they spent
= 1 u + 1 u + 12 + 1 u + 20
= 3 u + 32
3 u + 32 = 89
3 u = 89 - 32
3 u = 57
1 u = 57 ÷ 3 = $19
Amount that Cindy spent
= 1 u
= 19
(b)
Amount that Nora spent
= 1 u + 20
= 19 + 20
= $39
Answer(s): (a) $19; (b) $39
