PSLE
Four girls, Jane, Fanny, Xandra and Kimberly raised money for a charity. Jane and Fanny raised a total of $117. Together, Fanny, Xandra and Kimberly raised a total of $133. The total amount of money raised by all 4 girls is 4 times the amount that Fanny raised. How much money did Fanny raise?
Amount that Fanny and Jane raised = $117
Amount that Fanny, Xandra and Kimberly raised = $133

Fanny is the repeated identity.

Fanny + Jane = 117 --- (1)
Fanny + Xandra + Kimberly = 133 --- (2)

Amount that Fanny raised = 1 u
Amount that 4 girls raised = 4 u

(1) + (2)
(Fanny + Jane) + (Fanny + Xandra + Kimberly) = 117 + 133
Fanny + 4 girls = 250
1 u + 4 u = 250
5 u = 250

1 u = 250 ÷ 5 = 50

Amount that Fanny raised
= 1 u
= $50

Answer(s): $50