Eric bought 4 magazines. The original price of each magazine was $30. He was given 5% discount on the first magazine and 20% discount on the rest of the magazines. How much did he pay for the 4 magazines altogether?
Cost of the first magazine after 5% discount in percent
= 100% - 5%
= 95%
Cost of the first magazine after discount
= 95% x 30
=
95100 x 30
= $28.50
Number of the rest of the magazines that enjoyed 20% discount
= 4 - 1
= 3
Cost of each of the rest of the 3 magazines after 20% discount in percent
= 100% - 20%
= 80%
Cost of each of the rest of the 3 magazines
= 80% x 30
=
80100 x 30
= $24
Cost of the rest of the 3 magazines that enjoyed 20% discount
= 3 x 24
= $72
Total cost for the 4 magazines
= 28.50 + 72
= $100.50
Answer(s): $100.50