Xandra has $11 more than Gabby. Olivia has thrice as much money as Xandra. They have a total of $159.
- How much money does Xandra have?
- How much money does Olivia have?
(a)
Amount that Xandra has = 1 u
Amount that Gabby has = 1 u - 11
Amount that Olivia has = 3 u
Total amount that they has
= 1 u + 1 u - 11 + 3 u
= 5 u - 11
5 u - 11 = 159
5 u = 159 + 11
5 u = 170
1 u = 170 ÷ 5 = 34
(b)
Amount that Olivia has
= 3 u
= 3 x 34
= $102
Answer(s): (a) $34; (b) $102