Question

a man sold 12 candies in 10$ had loss of b% then again sold 12 candies at 12$ had profit of b% find the value of b. A) 9 b) 9.09 c) 10 d) 11

Answer 1

Answer:

Let the CP be 'x' then:

(x-10)*100/x = b% ----------->1

(12- x) * 100 /x = b% ------->2

(x-10)*100 / x = (12-x)*100 / x

x-10 = 12-x

x = 11

So by Submitting value of x into one of above question (1 or 2) we get b%

which is 9.09 or 9 Approx