Abi and Eva have $267. Zara and Abi have $284. The ratio of Eva to Zara is 3 : 4. How much does Abi have?
Amount that Eva has = 3 u
Amount that Zara has = 4 u
The amount that Abi has is the repeated identity.
Abi + 3 u = 267 --- (1)
Abi + 4 u = 284 --- (2)
(2) - (1)
4 u - 3 u = 284 - 267
1 u = 17
From (1):
Abi + 3 u = 267
Abi + 3 x 17 = 267
Abi + 51 = 267
Amount that Abi has
= 267 - 51
= $216
Answer(s): $216
