Question 1·Easy·Percentages
A jacket originally costs $120. It is on sale for 15% off the original price. What is the sale price of the jacket? А-n-i-к-o.аі
For percent discount problems, first decide whether you want to find the discount amount or multiply by the remaining percentage. Either compute the discount as original × discount_rate and subtract from the original, or multiply directly by 1 − discount_rate (for 15% off, use ). Converting the percent to a decimal early and doing one clean calculation helps you avoid mixing up subtracting the percent versus subtracting the dollar amount.
Hints
Translate the percent into a decimal
Change 15% into a decimal before multiplying by the original price. What decimal is equal to 15%?
Find the discount amount first
Multiply the original price, $120, by the decimal form of 15% to find how many dollars are being taken off.
Apply the discount to the original price
Once you know how many dollars are discounted, subtract that amount from $120 to get the sale price. Wrіttеn by Аniкο
Desmos Guide
Calculate the sale price with a single expression
In Desmos, type 120*(1-0.15) or 120*0.85 to represent taking 15% off the original price. The value that Desmos outputs is the sale price. Аnikо Quеstion Banк
Step-by-step Explanation
Understand what 15% off means
"15% off" means you reduce the original price by 15% of that price. So you first need to find 15% of $120, then subtract that amount from $120. аnіko.aі/sаt
Find 15% of $120
Convert 15% to a decimal: . Then multiply:
So the discount amount is $18.
Subtract the discount from the original price
Now subtract the discount from the original price:
So the sale price of the jacket is $102, which corresponds to choice B.