Surdeep bought a machinery for ₹ 800 after a $20\%$ discount on the company price. He fixes the selling price to earn $10\%$ profit on the original company price. Find the selling price.
Work with the base price. Undo discounts first, then apply profit or loss on that same base if asked.
₹900
₹1000
₹1100
₹1200
Let company price be $P$. Given $0.8P=800 \Rightarrow P=1000$.
Required SP $= P \times (1+0.10) = 1000 \times 1.10 = \boxed{₹1100}$.