First, we calculated the discounted price which would have been paid by Keith. That is the product of 85% and $36,000. ($36,000) x (85%) = $30,600 Then, after negotiating to pay 9% off the sale price, he will only need to pay 91% of the sale price. The new price would be, ($30600) x (0.91) = $27846 Thus, Keith will only need to pay $27,846.
Okay, so first you have to realize that 1/4 of a foot means there is 4 pieces in a foot. So at this point you need to say there is 5 groups of four because 4 pieces of tape in a foot. So 5 times 4 is 20 pieces of tape.