Percentage Mcqs
Q. When a number is first increased by 10 % and then reduced by 10 % the number:__________?
a. does not change
b. decreased by 1 %
c. increased by 1 %
d. None of these
Let the given number be x
Increased Number = (110% of x)
= (110/100 × x) = (11x/10)
Finally reduced number = (90 % of 11x/10)
= (90/100 × 11x/10) = 99x/100
Decrease = (x – 99x/100) = x/100
Decrease % = (x/100 × 1/x × 100)% = 1 %