Abi bought 8 croissants more than puffs. Each croissant cost $0.90 while each puff cost $2.50. Given that she spent $24.20 in total, how many puffs did Abi buy?
| |
Puffs |
Croissants |
Total |
| Number |
1 u |
1 u + 8 |
|
| Value |
$2.50 |
$0.90 |
|
| Total value |
2.5 u |
0.9 u + 7.2 |
0.9 u + 7.2 |
Amount that Abi paid for the puffs
= 1 u x 2.50
= 2.5 u
Amount that Abi paid for croissants
= 0.9 x (1 u + 8)
= 0.9 u + 7.2
Total amount that Abi paid
= 2.5 u + 0.9 u + 7.2
= 3.4 u + 7.2
3.4 u + 7.2 = 24.2
3.4 u = 24.2 - 7.2
3.4 u = 17
1 u = 17 ÷ 3.4 = 5
Number of puffs that Abi bought
= 1 u
= 5
Answer(s): 5
