Three sisters spent a total of $56. Sarah spent $9 more than Opal and Elyse spent $11 more than Sarah.
- How much money did Opal spend?
- How much money did Elyse spend?
(a)
Amount that Opal spent = 1 u
Amount that Sarah spent = 1 u + 9
Amount that Elyse spent = 1 u + 9 + 11 = 1 u + 20
Total amount that they spent
= 1 u + 1 u + 9 + 1 u + 20
= 3 u + 29
3 u + 29 = 56
3 u = 56 - 29
3 u = 27
1 u = 27 ÷ 3 = $9
Amount that Opal spent
= 1 u
= 9
(b)
Amount that Elyse spent
= 1 u + 20
= 9 + 20
= $29
Answer(s): (a) $9; (b) $29
