04 Try it yourself Interactive

Cost, label, and what the customer actually pays

Choose a cost price, a markup and a discount. The console walks the three prices in order and then collapses the whole thing into one multiplier. Set the markup and the discount to the same value and watch the result come out negative — that is the single most useful thing in this lesson.

Cost 400, marked +50%, 20% off
SP 480 · 20% profit
The final line gives the profit percentage without reference to the cost price, which is why these questions work with no rupee figures at all.
Press Next to work through it one step at a time.
Cost
Marked
Selling
Profit %
step 0 / 0