Cathy wanted to buy some macarons and puffs. The cost of a macaron was
15 the cost of a puff. A set of 6 macarons and 3 puffs cost $14.70. What was the total amount Cathy had to pay for 6 macarons and 10 puffs?
| |
Macarons |
Puffs |
Total |
| Number |
6 |
3 |
|
| Value |
1 u |
5 u |
|
| Total value |
6 u |
15 u |
21 u |
Total cost of macarons and puffs
= 6 u + 15 u
= 21 u
21 u = 14.7
1 u = 14.70 ÷ 21 = 0.7
Cost of 6 macarons and 10 puffs
= 6 x 1 u + 10 x 5 u
= 6 u + 50 u
= 56 u
= 56 x 0.7
= $39.20
Answer(s): $39.20
