Brandon's and Tammy's monthly allowances were the same at first. Brandon's allowance increased by 25% while Tammy's decreased by 40%. Given that Brandon's allowance would increase by another 40% if he had received $1200 more from his Mothers, find the difference in the children's monthly allowances.

	Brandon	Tammy
Before	1 u	1 u
Change 1	+ 0.25 u	- 0.4 u
After 1	1.25 u	0.6 u
Change 2	+ 0.5 u	No change
After 2	1.75 u	0.6 u

Increase in Brandon's allowance
= 25% x 1 u
= ²⁵₁₀₀ x 1 u
= 0.25 u

Decrease in Tammy's allowance
= 40% x 1 u
= ⁴⁰₁₀₀ x 1 u
= 0.4 u

Increase in Brandon's allowance if his Mothers gave another $1200
= 40% x 1.25 u
= ⁴⁰₁₀₀ x 1.25 u
= 0.5 u

0.5 u = 1200

1 u = 1200 ÷ 0.5 = 2400

Difference in the allowance between Brandon and Tammy
= 1.25 u - 0.6 u
= 0.65 u
= 0.65 x 2400
= $1560

Answer(s): $1560