Joelle baked cream, coffee and durian puffs. There were one-third as many durian puffs as coffee puffs and an equal number of durian puffs as cream puffs. The cost of each puff is given as shown.
1 durian puff: $1.90
1 coffee puff: $1.60
1 cream puff: $1.80
If she collected $255 from selling all the puffs, how many coffee puffs were there?
1 durian puff: $1.90
1 coffee puff: $1.60
1 cream puff: $1.80
If she collected $255 from selling all the puffs, how many coffee puffs were there?
