your friend works part time for a newspaper publisher and earns a commision of $1.50 for each 3-line classified ad he sells and $2.25 for each 5-line classified ad he sells. During a certain week he made a total of 80 sales and earned $157.50. How many 3-line classified ads did he sell?
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Home » Mathematics » your friend works part time for a newspaper publisher and earns a commision of $1.50 for each 3-line classified ad he sells and $2.25 for each 5-line classified ad he sells. During a certain week he made a total of 80 sales and earned $157.50.