Carl's and Wendy's monthly allowances were the same at first. Carl's allowance increased by 20% while Wendy's decreased by 25%. Given that Carl's allowance would decrease by another 30% if he had received $1008 less from his mothers, find the difference in the children's monthly allowances.

	Carl	Wendy
Before	1 u	1 u
Change 1	+ 0.2 u	- 0.25 u
After 1	1.2 u	0.75 u
Change 2	- 0.36 u	No change
After 2	0.84 u	0.75 u

Increase in Carl's allowance
= 20% x 1 u
= ²⁰₁₀₀ x 1 u
= 0.2 u

Decrease in Wendy's allowance
= 25% x 1 u
= ²⁵₁₀₀ x 1 u
= 0.25 u

Decrease in Carl's allowance if he had received $1008 less from his mothers
= 30% x 1.2 u
= ³⁰₁₀₀ x 1.2 u
= 0.36 u

0.36 u = 1008

1 u = 1008 ÷ 0.36 = 2800

Difference in the allowance between Carl and Wendy
= 1.2 u - 0.75 u
= 0.45 u
= 0.45 x 2800
= $1260

Answer(s): $1260