Eva and Olivia have $227. Hazel and Eva have $245. The ratio of Olivia to Hazel is 1 : 2. How much does Eva have?
Amount that Olivia has = 1 u
Amount that Hazel has = 2 u
The amount that Eva has is the repeated identity.
Eva + 1 u = 227 --- (1)
Eva + 2 u = 245 --- (2)
(2) - (1)
2 u - 1 u = 245 - 227
1 u = 18
From (1):
Eva + 1 u = 227
Eva + 1 x 18 = 227
Eva + 18 = 227
Amount that Eva has
= 227 - 18
= $209
Answer(s): $209
