To find the percentage of a whole part, the percentage must 1st be changed into a decimal and then multiplied by the whole part. In this case we have:
25 percent, it is changed to (.25).
25% of 20 dollars is .25(20.00) = $5.00
Now subtract the 5 dollars from the 20 to find the purchase price.
$20.00-$5.00= $15.00 is the purchase price.
Method 2.
In this case, it might be easier, however, if you just understand that 25% is a 1/4 or one quarter.
So a quarter of 20 is 5 since 5x4 =20
We can say write away, without a calculator, that the answer is $15. ( since 20-5 is 15)
25 percent off of 36 dollars would be 9 dollars off.
25 percent of 18 dollars is 18*25/100 = 4.50 dollars So 25% off of 18 dollars is 13.50 dollars
Subtracting 25 percent from 25 dollars gives 25 x (1 - (25/100)) = $18.75
9 dollars.
12 dollars
25 percent off of 36 dollars would be 9 dollars off.
80% of $25 is $20, so 80% off would be $5.
25 percent of 18 dollars is 18*25/100 = 4.50 dollars So 25% off of 18 dollars is 13.50 dollars
5 dollars.
20 dollars
$5.00
Subtracting 25 percent from 25 dollars gives 25 x (1 - (25/100)) = $18.75
$20-25% is easy to answer. first turn the percent into a decimal. It would then become .25 you multiply 20 by that decimal and get 5. So 25% - %20 would be 15 because 25% of 20 dollars is $5
9 dollars.
12 dollars
25% off of $364 is about $273
3 dollars off