Jen baked cream, apple and blueberry tarts. There were one-third as many blueberry tarts as apple tarts and an equal number of blueberry tarts as cream tarts. The cost of each tart is given as shown.
1 blueberry tart: $1.90
1 apple tart: $1.30
1 cream tart: $1.20
If she collected $231 from selling all the tarts, how many apple tarts were there?
|
Blueberry |
Apple |
Cream |
Ratio of tarts |
1 u |
3 u |
1 u |
Cost of 1 tarts |
$1.90 |
$1.30 |
$1.20 |
Total Value |
1.9 u |
3.9 u |
1.2 u |
Blueberry tarts : Apple tarts : Cream tarts
1 : 3 : 1
Total amount earned from selling all the tarts
= 1.9 u + 3.9 u + 1.2 u
= 7 u
7 u = 231
1 u = 231 ÷ 7 = 33
Number of apple tarts
= 3 u
= 3 x 33
= 99
Answer(s): 99