Question

At the grocery store, 5 candy bars cost $6. At the convenience store down the street, they sell the same candy bars at a price of 7 for $924. What is the percent increase of the price at the convenience store compared to the grocery store?
a) 1%
b) 9%
c) 10%
d) 12%

Answer 1

Hopefully you meant:
7 for $9.24

unit price of grocery = 6.00/5 = 1.2
unit price at convenience = 9.24/7 =

take the difference in the unit prices,
then divide by 1.2, you will get one of the answers.