Mary spent 57 of her money and an additional $15 on some staplers. She spent 13 of her remaining money and an additional $18 on pens. She spent 34 of the rest of the money on pencils. Given that Mary was left with $11, how much money did she have at first?
Fraction of the rest of the money left
= 1 -
34=
1414 of the rest of the money = 11
44 of the rest of the money
= 11 ÷ 1 x 4
= 44
Amount of the rest of the money + 44
= 1 -
13=
23 23 of the remaining money
= 44 + 18
= 62
33 of the remaining money
= 62 ÷ 2 x 3
= 93
Amount of the remaining money + 15
= 1 -
57 of her money
=
27 of her money
27 of the total money
= 93 + 15
= 108
77 of the total money
= 108 ÷ 2 x 7
= $378
Amount that Mary had at first = $378
Answer(s): $378