Question

A student divided a number by 4 when he required to multiply by 25.Calculate the
percentage of error in his result.

Answer 1

Answer:

10000%

Step-by-step explanation:

Answer 2

δ = 99%

Outline to calculate the percentage of error.

• Calculate the difference between the two values.  

• Divide the error by the expected value using division.  
• Multiply the resulted number by 100.
• The percentage error value can represent by the percentage symbol (%).

Percentage of error δ = $\frac{V_{E}-V_{A}}{V_{E}}$

Let take the number as X

= Expected value

   = 25*X

$V_{A}$= Actual value

   = $\frac{X}{4}$

Error=$V_{E} - V_{A}$

       = 25X-$X/4$

       = $\frac{100X-X}{4}$

       = $\frac{99X}{4}$

Percentage of error δ = *100

=

                                     = $\frac{99}{4} * 4$

                                  δ = 99%