Question

The weight of a machine is 40 kg. By mistake, it was weighed as 40.8 kg. Find the error percent.

• A. 5%
• B. 2%
• C. 4%
• D. 3%

Answer 1

The correct option is B 2%

Weight of the machine = 40 kg

Error weight of the machine = 40.8 kg

Error in weight = 40.8 – 40 = 0.8 kg

So the error percent = $\frac{(0.8\times 100)}{40}$

We can write it as

= $\frac{8\times 100}{10\times 40}$

= 2%