Fractional part of a number

CMAT 2019 · Quantitative Techniques & Data Interpretation · Easy · Arithmetic

If one third of one-fourth of a number is $15$ , then three-tenth of that number is:

Answer

Let the number be $x$ . $\frac{1}{3} \times \frac{1}{4} \times x = 15 \implies \frac{x}{12} = 15 \implies x = 180$

Three-tenth of $180 = \frac{3}{10} \times 180 = 54$ .

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