A number x is mistakenly divided by 10 instead of being multiplied by 10. what is the percentage error in the result?
Pick.
A) -99%
B) -100%
C) +99%
D) +100%
E) None
Solution: Actual result = 10x   By mistake it has been divided by 10 = x /10   % change = [10x -(10 /x) /10x] *100 = 99   = - 99%.   Since, actual value is greater than the wrong value.   Alternatively,   Let, x = 10   Actual result = 10 * 10= 
<gadget id="calculator">10 * 10</gadget>
<output>100</output>
100   wrong result= 10 /10= 
<gadget id="calculator">10 /10</gadget>
<output>1</output>
1.   Change= (1 -100) = -99   % change = -99%.   -99%nswer: Option -99%
<result>A</result>
A number x is mistakenly divided by 10 instead of being multiplied by 10. what is the percentage error in the result?