Gabriel's and Sabrina's monthly allowances were the same at first. Gabriel's allowance increased by 50% while Sabrina's decreased by 35%. Given that Gabriel's allowance would decrease by another 20% if he had received $372 less from his parents, find the difference in the children's monthly allowances.

	Gabriel	Sabrina
Before	1 u	1 u
Change 1	+ 0.5 u	- 0.35 u
After 1	1.5 u	0.65 u
Change 2	- 0.3 u	No change
After 2	1.2 u	0.65 u

Increase in Gabriel's allowance
= 50% x 1 u
= ⁵⁰₁₀₀ x 1 u
= 0.5 u

Decrease in Sabrina's allowance
= 35% x 1 u
= ³⁵₁₀₀ x 1 u
= 0.35 u

Decrease in Gabriel's allowance if he had received $372 less from his parents
= 20% x 1.5 u
= ²⁰₁₀₀ x 1.5 u
= 0.3 u

0.3 u = 372

1 u = 372 ÷ 0.3 = 1240

Difference in the allowance between Gabriel and Sabrina
= 1.5 u - 0.65 u
= 0.85 u
= 0.85 x 1240
= $1054

Answer(s): $1054