42 is 21% of what number?

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Answer 1 · 2018-05-31T22:50:11

$200$ $200$

Finding the answer is similar to finding $21 %$ $21%$ of $42$ $42$ .

First:

$\frac{42}{x} = \frac{21}{100}$ $42/x = 21/100$

Then you want to cross multiply:

$42 \times 100 = 21 \times x$ $42 xx 100 = 21 xx x$

$\frac{42 \times 100}{21} = x$ $(42 xx 100)/21 = x$

$\frac{4200}{21} = x$ $4200/21 = x$

$200 = x$ $200 = x$

The answer is $200$ $200$ .

Answer 2 · 2018-06-01T00:14:50

$200$ $200$

Let the number be $x$ $x$ .

Then we have:

$21 % \cdot x = 42$ $21%*x=42$

$0.21 \cdot x = 42$ $0.21*x=42$

$x = \frac{42}{0.21}$ $x=42/0.21$

$= 200$ $=200$

So, the number is $200$ $200$ .