Nathan buys a bottle of water for $1.25, gum for $0.50, and a book for $3.95. The sales tax is 10%. What is the sales tax for the things he buys?

Total cost of the book =$25.20

Which is cost of the book before taxes + Sales tax =$25.20

Letcost of the book before taxes =b

⇒b+5 % of b=25.20

⇒b+

100

5b

=25.20

⇒1.05b=25.20

⇒b=$24

Step-by-step explanation:

Hope it helps

i just took the test, the correct answer is .. 31.5 in.