Question

Which expression is equivalent to the given expression?

$3x(1.05)$

• A. $3x+3x+3x$
• B. $1.05x+1.05x+1.05x$
• C. $x+3.15$
• D. $1.05x+3$

Answer 1

The correct option is B

$1.05x+1.05x+1.05x$

Explanation for correct option:

Given expression, $3x(1.05)$ .

On expanding the given expression:

$$\begin{gathered} 3x(1.05)=3\left(1.05x\right) \\ =1.05x+1.05x+1.05x \\ \Rightarrow 3x(1.05)=1.05x+1.05x+1.05x \end{gathered}$$

Hence, option $\left(B\right)$ is correct.

Explanation for incorrect options:

$3x(1.05)=1.05x+1.05x+1.05x$

Hence, option $\left(A\right)$, option $\left(C\right)$, and option $\left(D\right)$ are incorrect.

Therefore, correct option is option $\left(B\right)$