Sean bought 5 textbooks. The original price of each textbook was $15. He was given 5% discount on the first textbook and 20% discount on the rest of the textbooks. How much did he pay for the 5 textbooks altogether?
Cost of the first textbook after 5% discount in percent
= 100% - 5%
= 95%
Cost of the first textbook after discount
= 95% x 15
=
95100 x 15
= $14.25
Number of the rest of the textbooks that enjoyed 20% discount
= 5 - 1
= 4
Cost of each of the rest of the 4 textbooks after 20% discount in percent
= 100% - 20%
= 80%
Cost of each of the rest of the 4 textbooks
= 80% x 15
=
80100 x 15
= $12
Cost of the rest of the 4 textbooks that enjoyed 20% discount
= 4 x 12
= $48
Total cost for the 5 textbooks
= 14.25 + 48
= $62.25
Answer(s): $62.25