David and Eric went out to dinner. Their total bill was $45. They added 20% gratuity to the bill. If they spilt the bill in half, how much did each person spend? Let t stand for the amount each person spent.

Equation:

How much money did each person spend?

Equation: t=[$45+($45 times 0.2)] divided by 2

David and Eric each spent: $27

Explanation: the amount of money each person spent (t) is 20% of 45 which is 0.2 times 45 and that equals 9. Then you have to add the total bill on to the gratuity which totals to $54 Then divide that total by two since David and Eric are splitting the bill and that equals to $27 each.