Min bought 4 shortbreads more than scones. Each shortbread cost $1.80 while each scone cost $2.30. Given that she spent $27.70 in total, how many scones did Min buy?
| |
Scones |
Shortbreads |
Total |
| Number |
1 u |
1 u + 4 |
|
| Value |
$2.30 |
$1.80 |
|
| Total value |
2.3 u |
1.8 u + 7.2 |
1.8 u + 7.2 |
Amount that Min paid for the scones
= 1 u x 2.30
= 2.3 u
Amount that Min paid for shortbreads
= 1.8 x (1 u + 4)
= 1.8 u + 7.2
Total amount that Min paid
= 2.3 u + 1.8 u + 7.2
= 4.1 u + 7.2
4.1 u + 7.2 = 27.7
4.1 u = 27.7 - 7.2
4.1 u = 20.5
1 u = 20.5 ÷ 4.1 = 5
Number of scones that Min bought
= 1 u
= 5
Answer(s): 5
