80% of Sabrina's amount was $348 more than Vaidev's amount. When Sabrina spent 60% of her amount and Vaidev spent 35% of his amount, they had the same amount of amount left. Find the amount that Vaidev had at first.

	80% of Sabrina's amount	Sabrina's amount	Vaidev's amount
Before	52 u	65 u	40 u
Change		- 39 u (- 60%)	- 14 u (- 35%)
After		26 u	26 u

Percentage of Sabrina's amount left
= 100% - 60%
= 40%

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

40% = ⁴⁰₁₀₀ = ²₅
65% = ⁶⁵₁₀₀ = ¹³₂₀

The amounts of amount that Sabrina and Vaidev had left were the same.
Make the numerators the same.

²₅ of Sabrina's amount = ¹³₂₀ of Vaidev's amount
²⁶₆₅ of Sabrina's amount = ²⁶₄₀ of Vaidev's amount

Amount that Sabrina had = 65 u

80% of the amount that Sabrina had
= 65 u x 80%
= 65 u x ⁸⁰₁₀₀
= 52 u

Difference between 80% of Sabrina's amount and Vaidev's amount
= 52 u - 40 u 
= 12 u

12 u = 348
1 u = 348 ÷ 12 = 29

Amount that Vaidev had at first
= 40 u
= 40 x 29
= $1160

Answer(s): $1160