If p and q are positive integers, each greater than 1, and if 21(p+1)=29 (q+1), what is the least possible value of (p+q)?
A
48
B
50
C
51
D
53
Correct Answer: 48
In the case where loss and gain percentage is common on same selling price, always a loss incurs in total deal. And this can be calculated by a short - cut: Loss on total deal, = (Common loss or gain percentage/10)^2 = (10/10)^2 = 1%