Sabrina spent some of her money on a dress, a pair of moccasins and some necklaces. She spent ¹₃ of her money and an additional $290 on a dress. Next, she spent ³₅ of the remaining money and an additional $79 on a pair of moccasins. Finally, she spent ²₃ of what she had left on some necklaces and had $7 left. How much did Sabrina have at first?
Fraction of the money that she had left
= 1 - ²₃ 
= ¹₃

¹₃ of the money she had left = 7
³₃ of the money she had left = 3 x 7 = 21

Fraction of the remaining money excluding the additional $79 spent on a pair of moccasins
= 1 - ³₅
= ²₅

²₅ of the remaining money = 21 + 79 = 100
¹₅ of the remaining money = 100 ÷ 2 = 50
⁵₅ of the remaining money = 5 x 50 = 250

Fraction of the total money excluding the additional $290 spent on the dress
= 1 - ¹₃
= ²₃

²₃ of total money = 250 + 290 = 540
¹₃ of total money = 540 ÷ 2 = 270
³₃ of total money = 3 x 270 = 810

Amount that Sabrina had at first = $810

Answer(s): $810