Anna wanted to buy some wafers and scones. The cost of a wafer was
34 the cost of a scone. A set of 6 wafers and 2 scones cost $10.40. What was the total amount Anna had to pay for 9 wafers and 9 scones?
| |
Wafers |
Scones |
Total |
| Number |
6 |
2 |
|
| Value |
3 u |
4 u |
|
| Total value |
18 u |
8 u |
26 u |
Total cost of wafers and scones
= 18 u + 8 u
= 26 u
26 u = 10.4
1 u = 10.40 ÷ 26 = 0.4
Cost of 9 wafers and 9 scones
= 9 x 3 u + 9 x 4 u
= 27 u + 36 u
= 63 u
= 63 x 0.4
= $25.20
Answer(s): $25.20
