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2256 . In an examination of four subjects, a student got 70,80, 90 and x marks and his average was 75. What was the value of x?
- A. 60
- B. 90
- C. 65
- D. 85
- E. None of these
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Bangladesh Bank - Assistant Director - 2001
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2262 . In company X, the average salary of 10 of the employees is Tk.30000, the average salary of 30 other employees is Tk.40000 and the average salary of the remaining 20 employees Tk.60000. What is the average salary of the 60 employees at the company?
- A. Tk.40000
- B. Tk.43000
- C. Tk.45000
- D. Tk.60000
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2263 . In creasing the original price of an item by 10%, then decreasing by 20% and then again increasing the price by 10% is equivalent to
- A. 4.4% decrease
- B. Original price
- C. 3.2% decrease
- D. 3.5% decrease
- E. None of these
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2264 . In Dhaka City 90% of the population own a car, 15% own a motorcycle, and everybody owns one or the other of both. What is the percentage of motorcycle owners who own cars?
- A. 33%
- B. 66%
- C. 50%
- D. 90%
- E. None of these
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বাংলাদেশ বনশিল্প উন্নয়ন কর্পোরেশন সহকারী ব্যবস্থাপক-০২.০৮.২০১৩
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