Question

Four- fifth of a numer is 10 more than two-third fund tha number​

Answer 1

let the number be x

hence

$\frac{4}{5} x = 10 + \frac{2}{3} x \\ \\ \frac{4}{5} x - \frac{2}{3} x = 10 \\ \\ x( \frac{4}{5} - \frac{2}{3} ) = 10 \\ \\ \\ x \frac{2}{?}$

$x \frac{2}{15} = 10 \\ \\ x = 10 \times \frac{15}{2} \\ \\ x = 75$

hope it helps