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Start learning 50% faster. Sign in nowThe 26th meeting of the Conference of the Parties to the UN Framework Convention on Climate Change takes place in Glasgow from Oct. 31st through November 12, 2021.
The average age of 21 children is 30 years. 4 new children, whose average age is 15 years, join them. Find the average age of the 25 children.
The average of the first four numbers is 'x+30', the average of the next 10 numbers is 'x', and the average of the remaining 6 numbers is 'x−20'. If t...
The average of 25 numbers is 40. If 2 is added to each number, then the new average will be:
The average of four numbers is 150. Two of the numbers are equal (not least), and 50 more than the least number. If the 4th number is twice the least nu...
The average of three numbers is 21. The first number is double the second, and the third number is double the first. Calculate the sum of the first and ...
The average of a series of 30 numbers is 70. The difference between the largest number and the smallest number is 140. If the largest and the smallest n...
The average weight of 4 persons is 56 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the...
Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
There are 5 consecutive odd and 3 consecutive even numbers. The sum of five consecutive odd numbers is 120 and the lowest even number is 4 more than the...
The average number of books sold by Viren in first 3 months is 3000 and in first 4 months is 3800. If the number of books sold by him in 5th ...
