1 . A man purchased equal number of banans at two different rates one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that , he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?

• A. 60
• B. 50
• C. 55
• D. 45
• D. None of them

Answer: Option B

Explanation: