Gillian bought 4 wafers more than scones. Each wafer cost $1.50 while each scone cost $1.30. Given that she spent $28.40 in total, how many scones did Gillian buy?
| |
Scones |
Wafers |
Total |
| Number |
1 u |
1 u + 4 |
|
| Value |
$1.30 |
$1.50 |
|
| Total value |
1.3 u |
1.5 u + 6 |
1.5 u + 6 |
Amount that Gillian paid for the scones
= 1 u x 1.30
= 1.3 u
Amount that Gillian paid for wafers
= 1.5 x (1 u + 4)
= 1.5 u + 6
Total amount that Gillian paid
= 1.3 u + 1.5 u + 6
= 2.8 u + 6
2.8 u + 6 = 28.4
2.8 u = 28.4 - 6
2.8 u = 22.4
1 u = 22.4 ÷ 2.8 = 8
Number of scones that Gillian bought
= 1 u
= 8
Answer(s): 8
