Question 91

When 40% of a number is added to 84. if the resultant is the number itself. then that number is

Solution

Let the number is x

Now, as per the condition given in the question,

$$\Rightarrow \dfrac{40x}{100}+84=x$$

$$\Rightarrow 0.4x+84=x$$

$$\Rightarrow x-0.4x=84$$

$$\Rightarrow 0.6x=84$$

$$\Rightarrow x=\dfrac{84}{0.6}=\dfrac{840}{6}=140$$

$$x=140$$

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