Jaslyn bought 4 muffins more than biscuits. Each muffin cost $1.70 while each biscuit cost $1.90. Given that she spent $28.40 in total, how many biscuits did Jaslyn buy?
| |
Biscuits |
Muffins |
Total |
| Number |
1 u |
1 u + 4 |
|
| Value |
$1.90 |
$1.70 |
|
| Total value |
1.9 u |
1.7 u + 6.8 |
1.7 u + 6.8 |
Amount that Jaslyn paid for the biscuits
= 1 u x 1.90
= 1.9 u
Amount that Jaslyn paid for muffins
= 1.7 x (1 u + 4)
= 1.7 u + 6.8
Total amount that Jaslyn paid
= 1.9 u + 1.7 u + 6.8
= 3.6 u + 6.8
3.6 u + 6.8 = 28.4
3.6 u = 28.4 - 6.8
3.6 u = 21.6
1 u = 21.6 ÷ 3.6 = 6
Number of biscuits that Jaslyn bought
= 1 u
= 6
Answer(s): 6
