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Option 2 is right answer
A batsman scores 87 runs in the 21st match of his career. His average runs per match increases by 2. What was his average before the 21st match.
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)...
In an office, there are 52 employees with an average weight of 38 kg. When the office manager's weight is included, the average w...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between t...
Average of 8 numbers is 80. If average of first four and last two numbers is 80 and 60, respectively then find the fifth number given that ratio of fift...
The average of 18 numbers is 36. If 4 is added to each number, then the new average will be:
There are three numbers 'a', 'b' and 'c' such that average of 'a' and 'b' is 14, average of 'b' and 'c' is 16 and average of 'a' and 'c' is 30. Find the...
The average age of a class of 24 girls is 15 years. If 6 new girls having average age of 10 years join the class, then the average age of the class beco...
Average 20 numbers is ‘x’. If the average of first 12 numbers is 64.5 while average of last 5 numbers is 86.6 and 13th, 14th a...
The certain sum amounts to Rs11313.5 in 2(1/2) years at 12% p.a., interest compounded 10 months. The sum (in Rs) is:
