40 is what percent of 50?

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Answer 1 · 2016-06-24T02:34:17

$40/50xx100=80%$

$x$ is the numerator = 40

$y$ is the denominator = 50

$z$ is the numerator as a percentage of the denominator = 80%

The algebra:

Divide $x$ by $y$ to get $z/100$

$x/y=z/100$

Multiply $z/100$ by 100 to get $z$

$z/100xx100=z$

How it works:

$40/50=80/100=0.8$

$80/100xx100=0.8xx100=80$

40 is 80% of 50.