dave and anita each earned the same amount of money selling newspapers but each worked different number of days. dave worked for 8 days.he earned 15$ less per day then anita did. anita worked for 4 days. how much did each earn altogether? how much money did each earn per day?

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D = dollars/day for Dave.

A = dollars/day for Anita.
Dave made, in 8 days, 8D.
Anita made,in 4 days, 4D
They made the same amount of money; therefore, 8D = 4A.
But we also know that Dave made $15 less per day; therefore, A-15 is D.
From the above 8D = 4A
Substitute A-15 for D.
8(A-15)=4A.
Solve for A.
Check my thinking. Check my work. If I didn't make an error, Anita made $30/day and Dave made $15/day. You can answer the last part of how much they made together.