Eva baked cream, coffee and pandan tarts. There were one-fifth as many pandan tarts as coffee tarts and an equal number of pandan tarts as cream tarts. The cost of each tart is given as shown.
1 pandan tart: $1.50
1 coffee tart: $1.10
1 cream tart: $1.90
If she collected $178 from selling all the tarts, how many coffee tarts were there?
|
Pandan |
Coffee |
Cream |
Ratio of tarts |
1 u |
5 u |
1 u |
Cost of 1 tarts |
$1.50 |
$1.10 |
$1.90 |
Total Value |
1.5 u |
5.5 u |
1.9 u |
Pandan tarts : Coffee tarts : Cream tarts
1 : 5 : 1
Total amount earned from selling all the tarts
= 1.5 u + 5.5 u + 1.9 u
= 8.9 u
8.9 u = 178
1 u = 178 ÷ 8.9 = 20
Number of coffee tarts
= 5 u
= 5 x 20
= 100
Answer(s): 100