Convert 8% too decimal form = 8/100 = .08 1250 * .08 = 100 1250 + 100 = 1350 To find out how many payments of 120 can be made : 120x = 1350 divide both sides by 120 x = 11.25 payments of $120 since .25 is a fraction calculate the actual $ amount by mult. 120 * .25 = $30 The last payment is $30