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The average weight of 4 persons is 50 kg. The heaviest person’s weight is 20 kg more than the lightest person’s weight. If the average weight of the...
Piyush bought 18 notebooks for Rs.1220 from shop A and 14 notebooks for Rs.860 from shop B. What is the average price he paid per book?
The average of 18 numbers is 12. If each number is increased by 2, what will be the mean of the new set of numbers?
The average age of a class of 18 girls is 14 years. If 2 new girls having average age of 10 years join the class, then the average age of the class beco...
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 age of three children is 32 years. If their ages are in the ratio 3:6:7. Find the age of the youngest child.
A bowler gives 15 runs per wicket. He gives 30 runs and takes 5 wickets in a last match after which his average becomes 13.5 runs per wicket. How many w...
In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average ...
A cricketer whose bowling average is 24.85, runs per wicket, takes 5 wickets for 52 runs and thereby decreases his average by 0.85. The number of wicket...
The average age of A and B is 16 years. If A is to be replaced by C, the average would be 15 years. The average age of C and A is 17 years. Find the age...
