PSLE
Four girls, Elyse, Winnie, Usha and Ivory raised money for a charity. Elyse and Winnie raised a total of $94. Together, Winnie, Usha and Ivory raised a total of $380. The total amount of money raised by all 4 girls is 5 times the amount that Winnie raised. How much money did Usha and Ivory raise?
Amount that Winnie and Elyse raised = $94
Amount that Winnie, Usha and Ivory raised = $380

Winnie is the repeated identity.

Winnie + Elyse = 94 --- (1)
Winnie + Usha + Ivory = 380 --- (2)

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

(1) + (2)
(Winnie + Elyse) + (Winnie + Usha + Ivory) = 94 + 380
Winnie + 4 girls = 474
1 u + 5 u = 474
6 u = 474

1 u = 474 ÷ 6 = 79

Total amount that Usha and Ivory raised
= 380 - 1 u
= 380 - 79
= $301

Answer(s): $301