The Washer family spent $15.80 each week for milk until the milk prices rose 5% in their town How much do they spend weekly on milk now?

15.80 * 1.05 should give you the answer

A method to solve it would be would be:

First converting 5% to a decimal then multiplying that by 15.80 in order the find 5 percent of 15.80 ... Afterwards you have to add that value to the original 15.80 ... And you should end up with the same answer.

Do the 1580 minus the 5 percent and then divide by 5 and then you should get ur answer