I believe the answer is 16
The original price is c. Then the grocery bill will be: c - 0.05c = 0.95 c. You can also say since the beggining that 5% disscount implies 0.95 factor, which leads to c * 0.95 = 0.95c. Sorry if it’s wrong
12x12=144. Answer is 144 miles
The percent of increase from 10 to 12 is 20 %. 10 x 1.2 = 12.
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