Diana and Jade have $289. Jaslyn and Diana have $349. The ratio of Jade to Jaslyn is 1 : 4. How much does Diana have?
Amount that Jade has = 1 u
Amount that Jaslyn has = 4 u
The amount that Diana has is the repeated identity.
Diana + 1 u = 289 --- (1)
Diana + 4 u = 349 --- (2)
(2) - (1)
4 u - 1 u = 349 - 289
3 u = 60
1 u = 60 ÷ 3 = 20
From (1):
Diana + 1 u = 289
Diana + 1 x 20 = 289
Diana + 20 = 289
Amount that Diana has
= 289 - 20
= $269
Answer(s): $269
