Answer:
Explanation:
Mark gave 1.80 tip which was 20% of the meal
1.80...................20%
? ........................100%
the meal was 9 dollars , 1.80*5=9
second problem
finance charge was 15% which amounts 39.00 dollars
if 15% is 39 dollars
5% is 39/3=13
100% is 13*20=260
260 was the original price