Question

31 out of 50 is what percent

Answer 1

31/50
Put the denominator as 100 to make it a percentage.
To do that, multiply the top and bottom by 2.
62/100
Now make that a percentage by taking off the 100 and adding a percent sign
62%
Hope this helps. 

Answer 2

31 out of 50 is 62%

Divide 31 over 50:
$\frac{31}{50} = 0.62$

Multiply 0.62 and 100. This will convert the decimal to a percentage:
$0.62 \times 100 = 62$