Question
Erika baked durian, cheese and strawberry wafers. There were half as many strawberry wafers as cheese wafers and an equal number of strawberry wafers as durian wafers. The cost of each wafer is given as shown.

1 strawberry wafer: $1.40
1 cheese wafer: $1.70
1 durian wafer: $1.20

If she collected $282 from selling all the wafers, how many cheese wafers were there?
3 m

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Erika baked durian, cheese and strawberry wafers. There were half as many strawberry wafers as cheese wafers and an equal number of strawberry wafers as durian wafers. The cost of each wafer is given as shown.

1 strawberry wafer: $1.40
1 cheese wafer: $1.70
1 durian wafer: $1.20

If she collected $282 from selling all the wafers, how many cheese wafers were there?