Emma had some money. If she buys 11 mochi balls, she will have $5 left. If she buys 13 mochi balls, she will have $1 left.
- How much does each mochi ball cost?
- How much money does she have?
(a)
Let 1 M be the price of 1 mochi ball.
11 M + 5 = 13 M + 1
13 M - 11 M = 5 - 1
2 M = 4
1 M = 4 ÷ 2 = 2
Cost of each mochi ball = $2
(b)
Total amount that Emma had
= 13 x 2 + 1
= 26 + 1
= $27
Answer(s): (a) $2; (b) $27