To gain 12%, the selling price should be 11628.
According to the given information, Bansi sells the rickshaw for 9240 and incurs a loss of 12%.
Substituting the given values, we get:
12 = (9240 - CP) / CP * 100
Solving for CP, we get:
CP = 10500
Let the cost price of the rickshaw be x.
Then, 0.88x = 9240
x = 10500
To gain 12%, the selling price should be 1.12x = 11628.
So the answer is B) 11628