30% of Tina's amount was $4368 less than Cody's amount. When Tina spent 35% of her amount and Cody spent 70% of his amount, they had the same amount of amount left. Find the amount that Cody had at first.

	Tina	Cody
Before	60 u	130 u
Change	- 21 u	- 91 u
After	39 u	39 u

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

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

65% = ⁶⁵₁₀₀ = ¹³₂₀
30% = ³⁰₁₀₀ = ³₁₀

The amounts of amount that Tina and Cody had left were the same. Make the numerators the same.

¹³₂₀ of Tina's amount = ³₁₀ of Cody's amount
³⁹₆₀ of Tina's amount = ³⁹₁₃₀ of Cody's amount

Amount that Tina had = 60 u

30% of the amount that Tina had
= 30% x 60 u
= ³⁰₁₀₀ x 60 u
= 18 u

Difference between Cody's amount and 30% of Tina's amount
= 130 u - 18 u
= 112 u

112 u = 4368

1 u = 4368 ÷ 112 = 39

Amount that Cody had at first
= 130 u
= 130 x 39
= $5070

Answer(s): $5070