Penelope baked strawberry, coffee and cheese cookies. There were one-fifth as many cheese cookies as coffee cookies and an equal number of cheese cookies as strawberry cookies. The cost of each cookie is given as shown.
1 cheese cookie: $1.90
1 coffee cookie: $1.50
1 strawberry cookie: $1.60
If she collected $143 from selling all the cookies, how many coffee cookies were there?
|
Cheese |
Coffee |
Strawberry |
Ratio of cookies |
1 u |
5 u |
1 u |
Cost of 1 cookies |
$1.90 |
$1.50 |
$1.60 |
Total Value |
1.9 u |
7.5 u |
1.6 u |
Cheese cookies : Coffee cookies : Strawberry cookies
1 : 5 : 1
Total amount earned from selling all the cookies
= 1.9 u + 7.5 u + 1.6 u
= 11 u
11 u = 143
1 u = 143 ÷ 11 = 13
Number of coffee cookies
= 5 u
= 5 x 13
= 65
Answer(s): 65