Two-third of one-fifth of one-fourth of a number is 10. What is 30% o…

Let the number be $x$.

Given:

$\frac{2}{3} \times \frac{1}{5} \times \frac{1}{4} \times x = 10$

$\frac{x}{30} = 10$

$x = 10 \times 30 = 300$

Now find 30% of the number:

$30\% \text{ of } 300 = \frac{30}{100} \times 300 = 90$