Correct option is B
Given:
Initial Selling Price (SP1) = ₹21
Profit1 = 20%
Profit2 required = 50%
Formula Used:
Solution:
Calculate CP: CP = = ₹17.5
Calculate SP2 for 50% profit: SP2 = = ₹26.25
Increase in SP = SP2 - SP1 = 26.25 - 21 = ₹5.25
So the correct answer is (b).