20 points!
I need help!
I will also be doing a 50 point giveaway later!

Step-by-step explanation:

Mark gave 1.80 tip which was 20% of the meal

1.8020%

? 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

12/11c

or

12

c

11

answer: 10 meter

step-by-step explanation:

need details