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: 6 years ago | Updated: 4 years ago

Updated: 4 years ago

3200

1200

2400

4800

None of them

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

ব্যাখ্যা

862

Best Ans:

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

6 years ago

0 0

Md Azizur Rahman

Founder of Satt

পরিসংখ্যান (Statistics)