PSLE
Four girls, Gwen, Pamela, Eva and Jane raised money for a charity. Gwen and Pamela raised a total of $82. Together, Pamela, Eva and Jane raised a total of $254. The total amount of money raised by all 4 girls is 5 times the amount that Pamela raised. How much money did Eva and Jane raise?
Amount that Pamela and Gwen raised = $82
Amount that Pamela, Eva and Jane raised = $254

Pamela is the repeated identity.

Pamela + Gwen = 82 --- (1)
Pamela + Eva + Jane = 254 --- (2)

Amount that Pamela raised = 1 u
Amount that 4 girls raised = 5 u

(1) + (2)
(Pamela + Gwen) + (Pamela + Eva + Jane) = 82 + 254
Pamela + 4 girls = 336
1 u + 5 u = 336
6 u = 336

1 u = 336 ÷ 6 = 56

Total amount that Eva and Jane raised
= 254 - 1 u
= 254 - 56
= $198

Answer(s): $198