Question

67/2% of a number increased then get the number 400, so what is the number​

Answer 1

Step-by-step explanation:

Let the required number be x.

$\therefore \: x + \frac{67}{2} \: \% \: of \: x = 400 \\ \therefore \: x + \frac{67}{2 \times 100} \: \times x = 400 \\ \therefore \: x + \frac{33.5}{100} \: \times x = 400 \\ \therefore \: x + 0.335x = 400 \\ \therefore \: 1.335x = 400 \\ \therefore \: x = \frac{400}{1.335} \\ \therefore \: x = 299.625468 \\ \huge \fbox{\therefore \: x \approx300}$