Lucy baked mocca, durian and blueberry wafers. There were one-fifth as many blueberry wafers as durian wafers and an equal number of blueberry wafers as mocca wafers. The cost of each wafer is given as shown.
1 blueberry wafer: $1.70
1 durian wafer: $1.90
1 mocca wafer: $1.80
If she collected $234 from selling all the wafers, how many durian wafers were there?
|
Blueberry |
Durian |
Mocca |
Ratio of wafers |
1 u |
5 u |
1 u |
Cost of 1 wafers |
$1.70 |
$1.90 |
$1.80 |
Total Value |
1.7 u |
9.5 u |
1.8 u |
Blueberry wafers : Durian wafers : Mocca wafers
1 : 5 : 1
Total amount earned from selling all the wafers
= 1.7 u + 9.5 u + 1.8 u
= 13 u
13 u = 234
1 u = 234 ÷ 13 = 18
Number of durian wafers
= 5 u
= 5 x 18
= 90
Answer(s): 90