Barbara has $5 more than Risa. Gem has thrice as much money as Barbara. They have a total of $135.
- How much money does Barbara have?
- How much money does Gem have?
(a)
Amount that Barbara has = 1 u
Amount that Risa has = 1 u - 5
Amount that Gem has = 3 u
Total amount that they has
= 1 u + 1 u - 5 + 3 u
= 5 u - 5
5 u - 5 = 135
5 u = 135 + 5
5 u = 140
1 u = 140 ÷ 5 = 28
(b)
Amount that Gem has
= 3 u
= 3 x 28
= $84
Answer(s): (a) $28; (b) $84