Opal and Gabby have $236. Jean and Opal have $252. The ratio of Gabby to Jean is 1 : 2. How much does Opal have?
Amount that Gabby has = 1 u
Amount that Jean has = 2 u
The amount that Opal has is the repeated identity.
Opal + 1 u = 236 --- (1)
Opal + 2 u = 252 --- (2)
(2) - (1)
2 u - 1 u = 252 - 236
1 u = 16
From (1):
Opal + 1 u = 236
Opal + 1 x 16 = 236
Opal + 16 = 236
Amount that Opal has
= 236 - 16
= $220
Answer(s): $220
