Elijah bought 4 colouring books. The original price of each colouring book was $32. He was given 20% discount on the first colouring book and 25% discount on the rest of the colouring books. How much did he pay for the 4 colouring books altogether?
Cost of the first colouring book after 20% discount in percent
= 100% - 20%
= 80%

Cost of the first colouring book after discount
= 80% x 32
= ⁸⁰₁₀₀ x 32
= $25.60

Number of the rest of the colouring books that enjoyed 25% discount
= 4 - 1
= 3

Cost of each of the rest of the 3 colouring books after 25% discount in percent
= 100% - 25%
= 75%

Cost of each of the rest of the 3 colouring books
= 75% x 32
= ⁷⁵₁₀₀ x 32
= $24

Cost of the rest of the 3 colouring books that enjoyed 25% discount
= 3 x 24 
= $72

Total cost for the 4 colouring books
= 25.60 + 72
= $97.60

Answer(s): $97.60