Wesley's and Kimberly's monthly allowances were the same at first. Wesley's allowance increased by 40% while Kimberly's decreased by 20%. Given that Wesley's allowance would increase by another 30% if he had received $1260 more from his Fathers, find the difference in the children's monthly allowances.

	Wesley	Kimberly
Before	1 u	1 u
Change 1	+ 0.4 u	- 0.2 u
After 1	1.4 u	0.8 u
Change 2	+ 0.42 u	No change
After 2	1.82 u	0.8 u

Increase in Wesley's allowance
= 40% x 1 u
= ⁴⁰₁₀₀ x 1 u
= 0.4 u

Decrease in Kimberly's allowance
= 20% x 1 u
= ²⁰₁₀₀ x 1 u
= 0.2 u

Increase in Wesley's allowance if his Fathers gave another $1260
= 30% x 1.4 u
= ³⁰₁₀₀ x 1.4 u
= 0.42 u

0.42 u = 1260

1 u = 1260 ÷ 0.42 = 3000

Difference in the allowance between Wesley and Kimberly
= 1.4 u - 0.8 u
= 0.6 u
= 0.6 x 3000
= $1800

Answer(s): $1800