80% of Vanessa's amount was $377 more than Justin's amount. When Vanessa spent 65% of her amount and Justin spent 20% of his amount, they had the same amount of amount left. Find the amount that Justin had at first.

	80% of Vanessa's amount	Vanessa's amount	Justin's amount
Before	64 u	80 u	35 u
Change		- 52 u (- 65%)	- 7 u (- 20%)
After		28 u	28 u

Percentage of Vanessa's amount left
= 100% - 65%
= 35%

Percentage of Justin's amount left
= 100% - 20%
= 80%

35% = ³⁵₁₀₀ = ⁷₂₀
80% = ⁸⁰₁₀₀ = ⁴₅

The amounts of amount that Vanessa and Justin had left were the same.
Make the numerators the same.

⁷₂₀ of Vanessa's amount = ⁴₅ of Justin's amount
²⁸₈₀ of Vanessa's amount = ²⁸₃₅ of Justin's amount

Amount that Vanessa had = 80 u

80% of the amount that Vanessa had
= 80 u x 80%
= 80 u x ⁸⁰₁₀₀
= 64 u

Difference between 80% of Vanessa's amount and Justin's amount
= 64 u - 35 u 
= 29 u

29 u = 377
1 u = 377 ÷ 29 = 13

Amount that Justin had at first
= 35 u
= 35 x 13
= $455

Answer(s): $455