Find the value of X
$$\begin{aligned} \sqrt{81} + \sqrt{0.81} = 10.09 - X \end{aligned}$$

Answer: Option C

Explanation:

$$\begin{aligned} = (\frac{25}{11} \times \frac{14}{5} \times \frac{11}{14}) \end{aligned}$$

$$\begin{aligned} = 5 \end{aligned}$$

Answer: Option C

Answer: Option C

Answer: Option B

Explanation:

$$\begin{aligned} => \sqrt{81} + \sqrt{0.81} = 10.09 - X \end{aligned}$$

$$\begin{aligned} => 9 + 0.9 = 10.09 - X \end{aligned}$$

$$\begin{aligned} => X = 10.09 - 9.9 = 0.19 \end{aligned}$$

Answer: Option B

Explanation:

Very obvious tip here is, after squre root the terms after decimal will be half (that is just a trick), works awesome at many questions like this.