A number of building blocks were purchased to construct a wall at cost of Tk. 40 each, but only 5/6th of them were used. If the unused 290 bricks were returned and their cost refunded, what was the cost of building blocks used to make the wall?
A Tk. 76,000
B Tk. 22, 800
C Tk. 30,400
D Tk. 41,400
Solution
Correct Answer: Option E
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