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$8$ is $40\%$ of what number?

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Solve percent equations

Full solution

Q.

8

is

40\%

of what number?

Convert to decimal: Step $1$ : Convert $40\%$ to a decimal. $\newline$ Calculation: $40 \div 100 = 0.4$
Set up equation: Step $2$ : Set up the equation to find the unknown number, let's call it $x$ . $\newline$ Equation: $0.4 \times x = 8$
Solve for x: Step $3$ : Solve for x. $\newline$ Calculation: $x = \frac{8}{0.4}$ $\newline$ $x = 20$

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