Answer:
8000
Step-by-step explanation:
Let the required number be x.
[tex] \therefore \: \frac{3}{8} \% \: of \: x = 30 \\ \\ \therefore \: \frac{3}{800} \times x = 30 \\ \\ \therefore \: x = 30 \times \frac{800}{3} \\ \\ \therefore \: x = 10 \times 800 \\ \\ \therefore \: x = 8000 \\ [/tex]