Tiffany wanted to buy some biscuits and muffins. The cost of a biscuit was
37 the cost of a muffin. A set of 7 biscuits and 3 muffins cost $12.60. What was the total amount Tiffany had to pay for 3 biscuits and 4 muffins?
| |
Biscuits |
Muffins |
Total |
| Number |
7 |
3 |
|
| Value |
3 u |
7 u |
|
| Total value |
21 u |
21 u |
42 u |
Total cost of biscuits and muffins
= 21 u + 21 u
= 42 u
42 u = 12.6
1 u = 12.60 ÷ 42 = 0.3
Cost of 3 biscuits and 4 muffins
= 3 x 3 u + 4 x 7 u
= 9 u + 28 u
= 37 u
= 37 x 0.3
= $11.10
Answer(s): $11.10
