Andy bought 5 fiction books. The original price of each fiction book was $12. He was given 5% discount on the first fiction book and 25% discount on the rest of the fiction books. How much did he pay for the 5 fiction books altogether?
Cost of the first fiction book after 5% discount in percent
= 100% - 5%
= 95%

Cost of the first fiction book after discount
= 95% x 12
= ⁹⁵₁₀₀ x 12
= $11.40

Number of the rest of the fiction books that enjoyed 25% discount
= 5 - 1
= 4

Cost of each of the rest of the 4 fiction books after 25% discount in percent
= 100% - 25%
= 75%

Cost of each of the rest of the 4 fiction books
= 75% x 12
= ⁷⁵₁₀₀ x 12
= $9

Cost of the rest of the 4 fiction books that enjoyed 25% discount
= 4 x 9 
= $36

Total cost for the 5 fiction books
= 11.40 + 36
= $47.40

Answer(s): $47.40