How do you write 3/40 as a percentage?

Question

36170 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-10-19T21:35:43

$7.5 %$ $7.5%$

First of all, you have to represent this rational number as a decimal fraction.
Dividing $3$ $3$ by $40$ $40$ , you get $0.075$ $0.075$ .

The percentage is just 100 times greater than decimal presentation, so it will be
$0.075 \times 100 % = 7.5 %$ $0.075xx100%=7.5%$

Or use the decimal as a fraction with a power of 10 as the denominator.

$0.075 = \frac{75}{1000} \frac{\div 10}{\div 10} = \frac{7.5}{100} = 7.5 %$ $0.075 = 75/1000 (div10)/(div10) = 7.5/100 = 7.5%$

Answer 2 · 2016-08-18T21:58:19

. $\frac{7.5}{100} = 7.5 %$ $7.5/100 = 7.5%$

To write a fraction as a percentage the easiest method is if we can change the denominator to 100.

$\frac{3}{40} \times \frac{2.5}{2.5} = \frac{7.5}{100} = 7.5 %$ $3/40 xx2.5/2.5 = 7.5/100 = 7.5%$

In many cases that method does not work,
so we can also do this by $\times 100 %$ $xx 100%$

$\frac{3}{40} \times 100 %$ $3/40 xx 100%$

= $7.5 %$ $7.5%$