Yoko baked durian, apple and banana cookies. There were one-third as many banana cookies as apple cookies and an equal number of banana cookies as durian cookies. The cost of each cookie is given as shown.
1 banana cookie: $1.20
1 apple cookie: $1.90
1 durian cookie: $1.10
If she collected $288 from selling all the cookies, how many apple cookies were there?
|
Banana |
Apple |
Durian |
Ratio of cookies |
1 u |
3 u |
1 u |
Cost of 1 cookies |
$1.20 |
$1.90 |
$1.10 |
Total Value |
1.2 u |
5.7 u |
1.1 u |
Banana cookies : Apple cookies : Durian cookies
1 : 3 : 1
Total amount earned from selling all the cookies
= 1.2 u + 5.7 u + 1.1 u
= 8 u
8 u = 288
1 u = 288 ÷ 8 = 36
Number of apple cookies
= 3 u
= 3 x 36
= 108
Answer(s): 108