Tammy and Joelle have $227. Penelope and Tammy have $240. The ratio of Joelle to Penelope is 3 : 4. How much does Tammy have?
Amount that Joelle has = 3 u
Amount that Penelope has = 4 u
The amount that Tammy has is the repeated identity.
Tammy + 3 u = 227 --- (1)
Tammy + 4 u = 240 --- (2)
(2) - (1)
4 u - 3 u = 240 - 227
1 u = 13
From (1):
Tammy + 3 u = 227
Tammy + 3 x 13 = 227
Tammy + 39 = 227
Amount that Tammy has
= 227 - 39
= $188
Answer(s): $188
