21 is what percent of 50?

1 Answer
Nov 30, 2016

Answer:

21 is 42% of 50.

Explanation:

"Percent" or "%" means "out of 100" or "per 100",

So we can say #21/50 = x/100#

Solving for #x# gives:

#100 * 21/50 = 100 * x/100#

#2 * 21 = cancel(100) * x/cancel(100)#

#x = 42#