The ratio of the number of cookies to the number of macarons in a supermarket is 4 : 1. A cookie costs $1.40 and a macaron costs $0.70. If all the cookies and macarons are sold, a sum of $252 will be collected. How many cookies are there altogether?
| |
Cookies |
Macarons |
Total |
| Number |
4 u |
1 u |
|
| Value |
$1.40 |
$0.70 |
|
| Total value |
5.6 u |
0.7 u |
$252 |
Amount collected if all the cookies are sold
= 4 u x 1.4
= 5.6 u
Amount collected if all the macarons are sold
= 1 u x 0.7 u
= 0.7 u
Amount collected if all the cookies and macarons are sold
= 5.6 u + 0.7 u
= 6.3 u
6.3 u = 252
1 u = 252 ÷ 6.3 = 40
Total number of cookies
= 4 u
= 4 x 40
= 160
Answer(s): 160
