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Marcus and Caesar have $20 each to spend at a kid's bookstore where students get a 20% discount. Marcus wants to purchase a book that sells for $22.50 and Caesar wants to purchase a book which sells for $22.75.with a sales tax of 10%, can Marcus and Caesar by the books?*Marcus can or cannot buy the book? *Cesar can or cannot buy the book?

Respuesta :

Answer:

Marcus: CAN

Cesar: CAN NOT

Step-by-step explanation:

Both books will first have an increase of 10% and then a discount of 20%:

Price of Marcus Book:

After Increase: 22.50 + 0.10*22.50 = 24.75

After Discount: 24.75 - 0.20*24.75 = 19.80

Final Price: $ 19.80

Since $19.80 < $20.00, Marcus can buy the book.

Price of Cesar Book:

After Increase: 22.75 + 0.10*22.75= 25.025

After Discount: 25.025 - 0.20*25.025 = 20.02

Final Price: $20.02

Since $20.02 > $20, Cesar can not buy the book.

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