Correct option is B
Given:
Cost price (CP) of 12 oranges = ₹60
Desired gain = 20%
We are to find how many oranges should be sold for ₹60 to gain 20%.
Solution:
CP of 1 orange = = ₹5
SP = ₹60
Required CP for 20% gain =
= ₹50
Number of oranges he should sell for ₹60 = = 10