Barbara and Jaslyn have $275. Gabby and Barbara have $355. The ratio of Jaslyn to Gabby is 1 : 5. How much does Barbara have?
Amount that Jaslyn has = 1 u
Amount that Gabby has = 5 u
The amount that Barbara has is the repeated identity.
Barbara + 1 u = 275 --- (1)
Barbara + 5 u = 355 --- (2)
(2) - (1)
5 u - 1 u = 355 - 275
4 u = 80
1 u = 80 ÷ 4 = 20
From (1):
Barbara + 1 u = 275
Barbara + 1 x 20 = 275
Barbara + 20 = 275
Amount that Barbara has
= 275 - 20
= $255
Answer(s): $255
