do you know how to divide 40 into 27 to get a decimal number ?
OpenStudy (anonymous):
yes
OpenStudy (phi):
what do you get ?
OpenStudy (anonymous):
0.675
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OpenStudy (phi):
to change a decimal to a percent, move the decimal point 2 places to the right
(or the same thing, multiply the decimal by 100)
what do you get ?
OpenStudy (anonymous):
67.5
OpenStudy (phi):
and add % to show it's a percent
67.5%
yes, you got it.
OpenStudy (anonymous):
ok thank u
OpenStudy (phi):
some people learn a few percents by heart: 0.1 is 10%
½ is 0.5 is 50%
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OpenStudy (mathstudent55):
A percent is simply a number divided by 100.
What number, x, divided by 100 equals 27/40?
\(\dfrac{27}{40} = \dfrac{x}{100}\)
Cross multiply:
40x = 27 * 100
40x = 2700
Divide both sides by 40
x = 67.5
Answer is 67.5%