Pamela and Cindy have $207. Esther and Pamela have $221. The ratio of Cindy to Esther is 1 : 2. How much does Pamela have?
Amount that Cindy has = 1 u
Amount that Esther has = 2 u
The amount that Pamela has is the repeated identity.
Pamela + 1 u = 207 --- (1)
Pamela + 2 u = 221 --- (2)
(2) - (1)
2 u - 1 u = 221 - 207
1 u = 14
From (1):
Pamela + 1 u = 207
Pamela + 1 x 14 = 207
Pamela + 14 = 207
Amount that Pamela has
= 207 - 14
= $193
Answer(s): $193
