Betty bought 8 macarons more than scones. Each macaron cost $1.50 while each scone cost $1.70. Given that she spent $24.80 in total, how many scones did Betty buy?
| |
Scones |
Macarons |
Total |
| Number |
1 u |
1 u + 8 |
|
| Value |
$1.70 |
$1.50 |
|
| Total value |
1.7 u |
1.5 u + 12 |
1.5 u + 12 |
Amount that Betty paid for the scones
= 1 u x 1.70
= 1.7 u
Amount that Betty paid for macarons
= 1.5 x (1 u + 8)
= 1.5 u + 12
Total amount that Betty paid
= 1.7 u + 1.5 u + 12
= 3.2 u + 12
3.2 u + 12 = 24.8
3.2 u = 24.8 - 12
3.2 u = 12.8
1 u = 12.8 ÷ 3.2 = 4
Number of scones that Betty bought
= 1 u
= 4
Answer(s): 4
