Wendy baked durian, strawberry and coffee cookies. There were one-third as many coffee cookies as strawberry cookies and an equal number of coffee cookies as durian cookies. The cost of each cookie is given as shown.
1 coffee cookie: $1.70
1 strawberry cookie: $1.50
1 durian cookie: $1.80
If she collected $200 from selling all the cookies, how many strawberry cookies were there?
|
Coffee |
Strawberry |
Durian |
Ratio of cookies |
1 u |
3 u |
1 u |
Cost of 1 cookies |
$1.70 |
$1.50 |
$1.80 |
Total Value |
1.7 u |
4.5 u |
1.8 u |
Coffee cookies : Strawberry cookies : Durian cookies
1 : 3 : 1
Total amount earned from selling all the cookies
= 1.7 u + 4.5 u + 1.8 u
= 8 u
8 u = 200
1 u = 200 ÷ 8 = 25
Number of strawberry cookies
= 3 u
= 3 x 25
= 75
Answer(s): 75