Question

20 out of 50 students have brown hair. What percentage of students have brown hair

Answer 1

40%

Explanation:

20/50 students have brown hair. To convert this into a percentage, the denominator has to be equal to 100. To get the denominator (50) to 100, we multiply the fraction by 2.

50 then becomes 100 and 20 becomes 40. Now the fraction looks like this, 40/100. 40/100 is actually equivalent to 40%.