Question

Which choice shows the answer to the following mathematical operation with the correct number of significant figures?
$\frac{12.55}{3.0}=4.18333$

• A. $4.18333$
• B. $4.2$
• C. $4.18$
• D. $4.183$
• E. 37.45

Answer 1

The correct option is B $4.2$

In multiplication, the final answer is reported as the same number of decimal places as that of the number with the least decimal places.

Therefore, $4.18333$ should be rounded off to only one decimal place.

Therefore, $\frac{12.55}{3.0}=4.2$