The ratio of the number of biscuits to the number of macarons in a kiosk is 4 : 1. A biscuit costs $1.80 and a macaron costs $0.60. If all the biscuits and macarons are sold, a sum of $234 will be collected. How many biscuits are there altogether?
| |
Biscuits |
Macarons |
Total |
| Number |
4 u |
1 u |
|
| Value |
$1.80 |
$0.60 |
|
| Total value |
7.2 u |
0.6 u |
$234 |
Amount collected if all the biscuits are sold
= 4 u x 1.8
= 7.2 u
Amount collected if all the macarons are sold
= 1 u x 0.6 u
= 0.6 u
Amount collected if all the biscuits and macarons are sold
= 7.2 u + 0.6 u
= 7.8 u
7.8 u = 234
1 u = 234 ÷ 7.8 = 30
Total number of biscuits
= 4 u
= 4 x 30
= 120
Answer(s): 120
