HP 113394 User Guide - Page 33

Section 2: Percentage and Calendar Functions 33 Net Amount in RPN Mode A net amount - that is, the base amount plus or minus the percentage amount - can be calculated easily with your hp 12c platinum, since the calculator holds the base amount inside after you calculate a percentage amount. To calculate a net amount, simply calculate the percentage amount, then press = or -. Example: You're buying a new car that lists for $23,250. The dealer offers you a discount of 8%, and the sales tax is 6%. Find the amount the dealer is charging you, then find the total cost to you, including tax. Keystrokes (RPN mode) Display 23250\ 23,250.00 Keys in the base amount and separates it from the percentage. 8b 1,860.00 Amount of discount. - 21,390.00 Base amount less discount. 6b 1,283.40 Amount of tax (on $21,390). = 22,673.40 Total cost: base amount less discount plus tax. Net Amount in ALG Mode In ALG mode, you can calculate a net amount all in one calculation: For example, to decrease 200 by 25%, just enter 200-25b}. (Result is 150.) Example: You borrow $1,250 from a relative, and agree to repay the loan in a year with 7% simple interest. How much money will you owe? Keystrokes (ALG mode) Display 1250+7b } 87.50 1,337.50 Interest on the loan is $87.50. You owe this amount at the end of one year. Example: You're buying a new car that lists for $23,250. The dealer offers you a discount of 8%, and the sales tax is 6%. Find the amount the dealer is charging you, then find the total cost to you, including tax. Keystrokes (ALG mode) Display 23250- 23,250.00 Keys in the base amount and prepares to subtract the discount percentage. File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 33 of 275 Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm