15% = 15/100 = 0.15
Fifteen percent is the exact same as the fraction 15/100 and also the decimal 0.15. They all simply average \"fifteen out of a hundred.\" A percent can always be created as a decimal, and a decimal deserve to be created as a percent, prefer this:
0.85 = 85%
We deserve to find any type of percent the a given number by an altering the percent to a decimal and multiplying. One hundred percent of a number is just the number itself. 2 hundred percent of a number is double that number.
You are watching: 50 is 30 percent of what number
100% that 50 > 50 200% of 50 > 2 x 50 = 100
Let\"s uncover 30 percent that 400:
First change 30% to a decimal by moving the decimal suggest 2 areas to the left.
30% = 0.30
Then multiply.
0.30 x 400 = 120
30% the 400 is 120.
Mental tennis2007.org There\"s one easy way to uncover 10% of a number there is no multiplying.
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Just move the decimal suggest in the number left by one place. Let\"s try it with these numbers:
895 27 10,411
10% of 895 = 89.5 10% the 27 = 2.7 10% of 10,411 = 1,041.1
Examples write each as a percent:
$6 the end of $12 > $6/$12 = 0.5 = 50% 34 out of 100 > 34/100 = 0.34 = 34% 0.55 = 55% 1.2 = 120%
Find the value of n because that each problem:
n is 50% the 60 > n = 0.5 x 60 = 30 n is 4% that 33 > n = 0.04 x 33 = 1.32 n is 150% that 24 > n = 1.5 x 24 = 36
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Homework assist  PreAlgebra  Numbers  Email this web page to a friend 
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