A clothing store offers a dress initially at Tk. 1000. Then one week later, the store offers the dress at 15% off. The dress still doesn't sell, so after another week, the store reduces its new price by 20%. How much does the dress cost now?

Question: A clothing store offers a dress initially at Tk. 1000. Then one week later, the store offers the dress at 15% off. The dress still doesn't sell, so after another week, the store reduces its new price by 20%. How much does the dress cost now?

Solution:
For the first discount,
we have 1000(1 - 0.15) = 1000(0.85) = 850
So the dress is worth Tk. 850

After the second discount,
we have 850(1 - 0.20) = 850(0.8) = 680

So the final dress price is Tk. 680