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The correct answer is A
There are 15 numbers such that average of first 12 numbers is 50 while the average of last five numbers is 60. Find the 12th number, if the ratio betwee...
Average weight of 13 nurses is 40 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 of 19 numbers is 15.The average of first 9 numbers are12 and that of the last 9 numbers are15. What will be the 19th number?
In a factory of 40 labours, if the two labours left the job whose wages were Rs. 950 and Rs. 1050 and two new labours join the factory which results in ...
A bag contains 6 red, 10 yellow, and 14 black balls. If 2 balls are picked at random without replacement, find the probability that the first ball is re...
The average number of books sold by Viren in first 4 months is 3600 and in first 5 months is 4200. If the number of books sold by him in 6th ...
In a classroom, the combined average age of all students and their teacher is 17 years. The average age of the boys in the class is 13 years. If the tea...
Average run scored by a batsman in first ‘x’ matches is 44. In next 8 matches he scored runs with an average of 80 so that his overal...
Average of 8 numbers is 80. If average of first four and last two numbers is 70 and 60, respectively then find the fifth number given that ratio of fift...
