20% of Dana's amount was $4214 less than Andy's amount. When Dana spent 45% of her amount and Andy spent 70% of his amount, they had the same amount of amount left. Find the amount that Andy had at first.

	Dana	Andy
Before	60 u	110 u
Change	- 27 u	- 77 u
After	33 u	33 u

Percentage of Dana's amount left
= 100% - 45%
= 55%

Percentage of Andy's amount left
= 100% - 70%
= 30%

55% = ⁵⁵₁₀₀ = ¹¹₂₀
30% = ³⁰₁₀₀ = ³₁₀

The amounts of amount that Dana and Andy had left were the same. Make the numerators the same.

¹¹₂₀ of Dana's amount = ³₁₀ of Andy's amount
³³₆₀ of Dana's amount = ³³₁₁₀ of Andy's amount

Amount that Dana had = 60 u

20% of the amount that Dana had
= 20% x 60 u
= ²⁰₁₀₀ x 60 u
= 12 u

Difference between Andy's amount and 20% of Dana's amount
= 110 u - 12 u
= 98 u

98 u = 4214

1 u = 4214 ÷ 98 = 43

Amount that Andy had at first
= 110 u
= 110 x 43
= $4730

Answer(s): $4730