Xylia and Zoe have $190. Shiyun and Xylia have $201. The ratio of Zoe to Shiyun is 4 : 5. How much does Xylia have?
Amount that Zoe has = 4 u
Amount that Shiyun has = 5 u
The amount that Xylia has is the repeated identity.
Xylia + 4 u = 190 --- (1)
Xylia + 5 u = 201 --- (2)
(2) - (1)
5 u - 4 u = 201 - 190
1 u = 11
From (1):
Xylia + 4 u = 190
Xylia + 4 x 11 = 190
Xylia + 44 = 190
Amount that Xylia has
= 190 - 44
= $146
Answer(s): $146
