The sales tax on the purchase of a refrigerator that costs $850 is 7 percent. What is the amount of sales tax?

Very simple the sales tax of an item it the amount taxed per dollar so you just take the value of 850 and multiply it by the decimal form of 7% or. 007 to get 59.50 in tax plus the 850 to get the total amount paid.

Multiply $850 by. 07 to get $59.50