90% of Hilda's amount was $3290 more than Albert's amount. When Hilda spent 65% of her amount and Albert spent 35% of his amount, they had the same amount of amount left. Find the amount that Albert had at first.

	90% of Hilda's amount	Hilda's amount	Albert's amount
Before	234 u	260 u	140 u
Change		- 169 u (- 65%)	- 49 u (- 35%)
After		91 u	91 u

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

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

35% = ³⁵₁₀₀ = ⁷₂₀
65% = ⁶⁵₁₀₀ = ¹³₂₀

The amounts of amount that Hilda and Albert had left were the same.
Make the numerators the same.

⁷₂₀ of Hilda's amount = ¹³₂₀ of Albert's amount
⁹¹₂₆₀ of Hilda's amount = ⁹¹₁₄₀ of Albert's amount

Amount that Hilda had = 260 u

90% of the amount that Hilda had
= 260 u x 90%
= 260 u x ⁹⁰₁₀₀
= 234 u

Difference between 90% of Hilda's amount and Albert's amount
= 234 u - 140 u 
= 94 u

94 u = 3290
1 u = 3290 ÷ 94 = 35

Amount that Albert had at first
= 140 u
= 140 x 35
= $4900

Answer(s): $4900