An algebra problem by Noah Smalls
Algebra
Level
pending
A model solar system was originally priced at $50, but Susan waited to buy it until the model solar system was on sale for 50% off. If she paid 12% sales tax on the sale price, how much (in $) did she pay in total?
The answer is 28.00.
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1 solution
First find the discount price. Write 50% as the decimal 0.50 before using it in the equation.
discount price = original price – discount
= 50 – 0.50 × 50
= 50 – 25
= 25
The discount price was $25.
Now find the tax. Write 12% as the decimal 0.12 before using it in the equation.
tax = tax percentage × amount
= 0.12 × 25
= 3
The tax was $3.
Finally, find the total cost.
total cost = discount price + tax
= 25 + 3
= 28
The total cost was $28.