Monir and Mohin bought the same item. Monir paid Tk 15,000. Mohin got discount and paid Tk. 3,000 less than Monir. How much discount did Mohin get?

Question: Monir and Mohin bought the same item. Monir paid Tk 15,000. Mohin got discount and paid Tk. 3,000 less than Monir. How much discount did Mohin get?

Solution:
In Tk. 15000 Mohin get discount Tk. 3000
In Tk. 1 Mohin get discount Tk. (3000/15000)
In Tk. 100 Mohin get discount Tk. (3000 × 100)/15000
= Tk. 20

∴ Mohin get 20% discount.