Ivory and Yen have $163. Min and Ivory have $173. The ratio of Yen to Min is 4 : 5. How much does Ivory have?
Amount that Yen has = 4 u
Amount that Min has = 5 u
The amount that Ivory has is the repeated identity.
Ivory + 4 u = 163 --- (1)
Ivory + 5 u = 173 --- (2)
(2) - (1)
5 u - 4 u = 173 - 163
1 u = 10
From (1):
Ivory + 4 u = 163
Ivory + 4 x 10 = 163
Ivory + 40 = 163
Amount that Ivory has
= 163 - 40
= $123
Answer(s): $123
