Jaslyn bought 4 puffs more than biscuits. Each puff cost $0.90 while each biscuit cost $1.40. Given that she spent $26.90 less on the puffs than on the biscuits, how many puffs did Jaslyn buy?
| |
Biscuits |
Puffs |
Difference |
| Number |
1 u |
1 u + 4 |
|
| Value |
1.40 |
0.90 |
|
| Total value |
1.4 u |
0.9 u + 3.6 |
0.5 u - 3.6 |
Amount that Jaslyn paid for the biscuits
= 1 u x 1.4
= 1.4 u
Amount that Jaslyn paid for the puffs
= 0.9 x (1 u + 4)
= 0.9 u + 3.6
Amount that Jaslyn paid less on the puffs than the biscuits
= 1.4 u - (0.9 u + 3.6)
= 1.4 u - 0.9 u - 3.6
= 0.5 u - 3.6
0.5 u - 3.6 = 26.90
0.5 u = 26.90 + 3.6
0.5 u = 30.5
1 u = 30.5 ÷ 0.5 = 61
Number of puffs that Jaslyn bought
= 1 u + 4
= 61 + 4
= 65
Answer(s): 65
