In 2007, the arithmetic mean of the annual incomes of Rahim and Karim was Taka 3800 . The arithmetic mean of the annual incomes of Karim and Ripon was Ripon and Rahim was TaKa5800. What is the arithmetic mean of the incomes of the three ?

Created: 7 years ago | Updated: 5 months ago

Updated: 5 months ago

3200

1200

2400

4800

None of them

Bangladesh Bank Bangladesh Bank - Assistant Director - 2012 গণিত পরিসংখ্যান (Statistics) 2012

Des

Best Ans:

(Rahim + karim)/2 + (Karim + ripon)/2 + (Ripon + Rahim)/2 = 3800 + 4800 + 5800
So, (Rahim + Karim + Ripon)/3 = 14400/3 = 4800

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7 years ago

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