Shiyun and Esther have $177. Wendy and Shiyun have $190. The ratio of Esther to Wendy is 1 : 2. How much does Shiyun have?
Amount that Esther has = 1 u
Amount that Wendy has = 2 u
The amount that Shiyun has is the repeated identity.
Shiyun + 1 u = 177 --- (1)
Shiyun + 2 u = 190 --- (2)
(2) - (1)
2 u - 1 u = 190 - 177
1 u = 13
From (1):
Shiyun + 1 u = 177
Shiyun + 1 x 13 = 177
Shiyun + 13 = 177
Amount that Shiyun has
= 177 - 13
= $164
Answer(s): $164
