Solve the following.
$$\frac{3}{\sqrt{0.0009}}+\frac{4}{\sqrt{0.0016}}$$​ = ?

Correct option is C

Given: 

​$$\frac{3}{\sqrt{0.0009}} + \frac{4}{\sqrt{0.0016}}$$​​

Solution:

​$$\frac{3}{\sqrt{0.0009}} + \frac{4}{\sqrt{0.0016}}$$ 

​ the square roots 

​$$\sqrt{0.0009} = 0.03$$ 

(because $$0.03^2$$​=0.0009)

​​$$\sqrt{0.0016} = 0.04$$ 

(because $$0.04^2$$​=0.0016)

Substitute the simplified square roots back into the expression.

=$$\frac{3}{0.03} + \frac{4}{0.04}$$ 

= $$\frac{300}{3} + \frac{400}{4}$$​​

= 100 + 100

= 200