Question

4. One third of a number is greater than one fifth of a number by 20.Find the number​

Answer 1

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$\frac{1}{3} + \frac{1x}{5} = 20 \\ \\ = > \frac{1}{3} + x = 100 \\ \\ = > \frac{(1 + 3)x}{3} = 100 \\ \\ = > 4x = 300 \\ \\ = > x = \frac{300}{4} \\ \\ = > x = 75$