Petra wants to buy a skateboard. The skateboard deck usually costs $37.50, but it is on sale for 20% off. If the sales tax rate is 5.2%, how much will Petra pay for the skateboard deck in all?

A. $30.00

B. $31.56

C. $31.95

D. $39.45

Answer:31.56

Step-by-step explanation:

take 37.50 and divide it by 100

then multiply that by 80

you should get 30,

30 is 80% of 37.50 which is 20% off of the original price

then you divide 30 by 100 and multiply it by 5.2

this will get you 1.56

add that to 30 and you get 31.56