Jen and Marion have $202. Linda and Jen have $212. The ratio of Marion to Linda is 1 : 2. How much does Jen have?
Amount that Marion has = 1 u
Amount that Linda has = 2 u
The amount that Jen has is the repeated identity.
Jen + 1 u = 202 --- (1)
Jen + 2 u = 212 --- (2)
(2) - (1)
2 u - 1 u = 212 - 202
1 u = 10
From (1):
Jen + 1 u = 202
Jen + 1 x 10 = 202
Jen + 10 = 202
Amount that Jen has
= 202 - 10
= $192
Answer(s): $192
