40% of 75 is what number?

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Answer 1 · 2017-01-31T05:10:22

$30$

$40%$ is the same as $40/100$ , so taking the percent amount as $x$ we write:

$x=75xx40/100$

Dividing the numerator and the denominator by $25$ , we get:

$x=3cancel75xx40/(4cancel100)$

$x=3xx40/4$

Dividing the numerator and the denominator by $4$ , we get:

$x=3xx(10cancel40)/(1cancel4)$

$x=3xx10$

$x=30$