Elyse has $10 more than Barbara. Mary has thrice as much money as Elyse. They have a total of $185.
- How much money does Elyse have?
- How much money does Mary have?
(a)
Amount that Elyse has = 1 u
Amount that Barbara has = 1 u - 10
Amount that Mary has = 3 u
Total amount that they has
= 1 u + 1 u - 10 + 3 u
= 5 u - 10
5 u - 10 = 185
5 u = 185 + 10
5 u = 195
1 u = 195 ÷ 5 = 39
(b)
Amount that Mary has
= 3 u
= 3 x 39
= $117
Answer(s): (a) $39; (b) $117