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One-fifth of a number exceeds one-seventh of the same by 10. The number is :

Answer:

Explanation:

let no be n,$(\frac{1}{5})n= (\frac{1}{7})(n)+3$
$(\frac{n}{5})= (\frac{n}{7})+10$
$(\frac{n}{5})= \frac{n+70}{7}$
$7n=5(n+70)=> 7n=5n+350 => 7n-5n = 350$
$=> 2n=350=> n=\frac{350}{2}=175$