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8. The sales tax rate for a local county is 9.2%. If an item costs $246 (before tax), how much sales tax will be due?
9. If 20 is increased to 23, the increase is what percent of the original number?
10. How old am I if 400 reduced by two times my age is 304? (answer should be realistic.)
11. A car rental agency advertised renting a Buick Century for $24.95 per day and $0.29 per mile. If you rent this car for 2 days, how many whole miles can you drive on a $100 budget?
12. The left and right page numbers of an open book are two consecutive integers whose sum is 469. Find these page numbers.
13. The room numbers of two adjacent classrooms are two consecutive odd numbers. If their sum is 656, find the classroom numbers.