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The correct answer is A
Average of 12 observations calculated by a student was 60 but when he again went through his observations he realised that he took value of three observ...
The average marks of all the students decreased by 2 when it was found that marks of one of the student were wrongly interpreted as 80 instead of 40. Fi...
Average weight of 11 nurses is 36 kg. If the weight of one more nurse is included, then average weight is increased by 2 kg. Find the weight of the newl...
The average weight of 4 persons is 46 kg. The heaviest person’s weight is 28 kg more than the lightest person’s weight. If the average weight of the...
A bowler gives 16.2 runs per wicket. He gives 32 runs and takes 8 wickets in a last match after which his average becomes 15.4 runs per wicket. How many...
The average age of X, Y, and Z is 25 years, and the average age of X and Y was 19.5 years at the time of Z's birth. If X is now 30 years old, determine ...
The average cost of 4 chairs is Rs. 11000. The average cost decrease by 15% when one more chair is included. What is the cost price of the 5th
The average of 20 numbers is 75. The average of the first 12 numbers is 80, while the average of the last 11 numbers is 68. If the 12th number is remove...
The average weight of five friends A, B, C, D and E is (x+8) years while the average weight of C and E is (x-8) kg. If the weight of another person F is...
If a:b:c = 3:4:6, and (5a + 3c) = 132, then find the value of '3b'.
