Wendy and Irene have $175. Julie and Wendy have $193. The ratio of Irene to Julie is 4 : 5. How much does Wendy have?
Amount that Irene has = 4 u
Amount that Julie has = 5 u
The amount that Wendy has is the repeated identity.
Wendy + 4 u = 175 --- (1)
Wendy + 5 u = 193 --- (2)
(2) - (1)
5 u - 4 u = 193 - 175
1 u = 18
From (1):
Wendy + 4 u = 175
Wendy + 4 x 18 = 175
Wendy + 72 = 175
Amount that Wendy has
= 175 - 72
= $103
Answer(s): $103
