Xuan has $10 more than Winnie. Wendy has seven times as much money as Xuan. They have a total of $179.
- How much money does Xuan have?
- How much money does Wendy have?
(a)
Amount that Xuan has = 1 u
Amount that Winnie has = 1 u - 10
Amount that Wendy has = 7 u
Total amount that they has
= 1 u + 1 u - 10 + 7 u
= 9 u - 10
9 u - 10 = 179
9 u = 179 + 10
9 u = 189
1 u = 189 ÷ 9 = 21
(b)
Amount that Wendy has
= 7 u
= 7 x 21
= $147
Answer(s): (a) $21; (b) $147