Rachel wanted to buy some puffs and croissants. The cost of a puff was
38 the cost of a croissant. A set of 5 puffs and 2 croissants cost $6.20. What was the total amount Rachel had to pay for 6 puffs and 6 croissants?
| |
Puffs |
Croissants |
Total |
| Number |
5 |
2 |
|
| Value |
3 u |
8 u |
|
| Total value |
15 u |
16 u |
31 u |
Total cost of puffs and croissants
= 15 u + 16 u
= 31 u
31 u = 6.2
1 u = 6.20 ÷ 31 = 0.2
Cost of 6 puffs and 6 croissants
= 6 x 3 u + 6 x 8 u
= 18 u + 48 u
= 66 u
= 66 x 0.2
= $13.20
Answer(s): $13.20
