Q. 
If a, b, c, d are positive integers. Solve the question with the 4 statements given below. i) a % of (c + d) = 40 ii) a – b = 20 iii) b + c = 50 iv) a + b = (c + d)% of (a + b) To get the answer to find the percentage a of (b + c + d), which of the above statement is not required? 
A. (i) 

B. (ii) 

C. (iii) 

D. (iv) 
_{From statement (iv), we can get, c + d = 100}
Putting the value of c + d in (i), we get, a = 40
^{a} / _{b+c+d} x 100 = ^{40}/_{120} =33.33%
We don't need statement (iii) to get the above answer.
Kartik Behera (February 09, 2021 at 19:31) said: