A sells an article which costs him Tk. 400 to B at a profit of 20%. B then sells it to C, making a profit of 10% on the price he paid to A. How much does C pay to B?

A sells an article which costs him Tk. 400 to B at a profit of 20%. B then sells it to C, making a profit of 10% on the price he paid to A. How much does C pay to B? সঠিক উত্তর Tk. 528

At 20% profit A sold the article to B at (400+ 400*20/100)= 480 tk. 
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