The total cost of flooring a room at Tk. 8.50 per square meter is Tk. 510. If the length of the room is 8 m, its breadth is ?

A 7.5 m
B 8.5 m
C 10.5m
D 12.5m

Correct Answer: 7.5 m

কক্ষটির ক্ষেত্রফল = 5108.5 = 60 বর্গমিটার যেহেতু কক্ষটির দৈর্ঘ্য = ৮ মিটার ∴ প্রস্থ 60/8 = 7.5 মিটার
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