Answer:
x=$30
Step-by-step explanation:
Remember that if there is a 25% discount, then the amount you are paying represents 75%. We know the original price (ie 100%)
There are several methods.
Simplest: Find 25% of the$40 and subtract to find the price to be paid.
25%of40=25100×40=10 discount
price = 40−10=$30
Second method. Find 75% immediately
75%of40=75100×40=$30
You can do any percentage question using the concept of direct proportion.
40100=x75 if $40 is 100%, how much is 75%?
100x=75×40 cross-multiply
x=75×40100 this a possible expression for the sale price
x=$30