Challenger App

No.1 PSC Learning App

1M+ Downloads
If the average weight of 6 students is 50 kg; that of 2 students is 51 kg; and that of other 2 students is 55 kg; then the average weight of all students is

A52 kg

B51.2 kg

C51.5 kg

D61 kg

Answer:

B. 51.2 kg

Read Explanation:

average weight=(50×6+51×2+55×2)/10 = 300+102+110/10 = 51.2 kg


Related Questions:

Average weight of 10 students increased by 2 kg when a boy of 48 kg replaced by another boy. Find the weight of the new boy ?
The average age of 25 men is 28 years. 5 new men of an average age of 25 years joined them. Find the average age of all the men together.
(x + 2)/ x ന്റെയും (x -2)/ x ന്റെയും ശരാശരി എത്ര?
The average monthly expenditure of a man is Rs.2400 during the first three month, Rs 3,500 during the next five months and Rs 4,800 for the remaining four months. If his total saving is Rs.3,500 during the entire year. then what is his average monthly income (in Rs)?
The average monthly salary of Sailesh is Rs 75,000 for 12 months (from January to December). If the salary that he receives in January and February is removed, the average salary falls by 15,000. What is the average of the salaries received in January and February?