Question 63

How much does one need to add to $$\frac{4}{5}$$ to obtain $$\frac{5}{4}$$ ?

Solution
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The correct option is D.

 $$x$$ + $$\frac{4}{5}$$ = $$\frac{5}{4}$$

$$\Rightarrow$$ $$x$$ = $$\frac{5}{4}$$ - $$\frac{4}{5}$$ 

                   = $$\frac{25-16}{20}$$ = $$\frac{9}{20}$$

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