Hilda wanted to buy some muffins and wafers. The cost of a muffin was
14 the cost of a wafer. A set of 5 muffins and 2 wafers cost $10.40. What was the total amount Hilda had to pay for 5 muffins and 7 wafers?
| |
Muffins |
Wafers |
Total |
| Number |
5 |
2 |
|
| Value |
1 u |
4 u |
|
| Total value |
5 u |
8 u |
13 u |
Total cost of muffins and wafers
= 5 u + 8 u
= 13 u
13 u = 10.4
1 u = 10.40 ÷ 13 = 0.8
Cost of 5 muffins and 7 wafers
= 5 x 1 u + 7 x 4 u
= 5 u + 28 u
= 33 u
= 33 x 0.8
= $26.40
Answer(s): $26.40
