Ok, so I feel like a big idiot for having to ask this but, my sister needed help with her algebra homework and I cannot for the life of me remember how to do these. I guess it's just the way the problems are worded. If anyone could help with an explanation for each problem so that I can explain it to her, I would greatly appreciate it. 1. A student company made some school book covers at a cost of 10 cents each. They sold all but three of them at 15 cents each. Their profit was 90 cents. How many covers did they make. 2. Nadia has seven more nickels than Dora has dimes. If Dora gives Nadia four of her dimes, then Dora will have the same value of money as Nadia. How much money do they have together. 3. Acme Appliance Company bought several Model H television sets costing $325.00 each. They gave away one set as a door prize and sold the rest for $399.00 each. If their profit was $1,821.00 , find out how many sets they bought. 4. Some Booster Club members made cupcakes at a cost of 20 cents each. They sold all but two at 30 cents each. If the clubs profit was $3.00 , how many cupcakes did they make. ...stupid word problems, thanks for the help!