Jen had some money. If she buys 4 mini cupcakes, she will have $9 left. If she buys 7 mini cupcakes, she will have $3 left.
- How much does each mini cupcake cost?
- How much money does she have?
(a)
Let 1 M be the price of 1 mini cupcake.
4 M + 9 = 7 M + 3
7 M - 4 M = 9 - 3
3 M = 6
1 M = 6 ÷ 3 = 2
Cost of each mini cupcake = $2
(b)
Total amount that Jen had
= 7 x 2 + 3
= 14 + 3
= $17
Answer(s): (a) $2; (b) $17