The average of 40 observations is 50 and the average of another 60 observations is 55. The average of all observation is
A50
B53
C62
D83
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Related Questions:
The average of first 119 odd natural numbers, is:
In a class of 52 students the number of boys is two less than the number of girls. Average weight of the boys is 42 kg, while the average weight of all the 52 students is 40 kg. Approximately what is the average weight of the girls?
6 ന്റെ ആദ്യത്തെ 30 ഗുണിതങ്ങളുടെ ശരാശരി എത്ര?
The average of 25 numbers is 15 and the average of first five numbers is 35. What is the average of remaining numbers?
The average age of a set of 30 persons is 35. The average of 20 persons is 18. What will be the average of the remaining?