Three brothers spent a total of $86. Rachel spent $7 more than Yoko and Emily spent $6 more than Rachel.
- How much money did Yoko spend?
- How much money did Emily spend?
(a)
Amount that Yoko spent = 1 u
Amount that Rachel spent = 1 u + 7
Amount that Emily spent = 1 u + 7 + 6 = 1 u + 13
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 13
= 3 u + 20
3 u + 20 = 86
3 u = 86 - 20
3 u = 66
1 u = 66 ÷ 3 = $22
Amount that Yoko spent
= 1 u
= 22
(b)
Amount that Emily spent
= 1 u + 13
= 22 + 13
= $35
Answer(s): (a) $22; (b) $35
