Help, and if you send a link I whole report

After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %

How many $20 bills do you need to have to make $280

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?