Question

answer this question

Answer 1

8× rootx = 15×16
rootx = 15×16/8
rootx = 30
taking squares
x = 900

hope this will help you

Answer 2

$\frac{ \sqrt{x} }{16} = \frac{15}{8} \\ 8 \sqrt{x} = 240 \\ \sqrt{x} = 30 \\ x = {30}^{2} \\ x = 900$
So the option B is the correct answer