A batsman makes a score of 87 runs in the 17<sup>th</sup> inning and thus increases his average by 3. Find h…

If the average of m numbers is n<sup>2</sup> and that of n numbers is m<sup>2</sup> , then the …

Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent …

Amount five people with monthly income (in Rs.) 15000, 26000, 16000, 19000, 50000, how many will have income less than t…

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the f…

The mean of 5 numbers is 18. If one number is excluded, their mean is 16. Find the excluded number.

The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x and y is 10. What is the value of y?

In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score for the whole c…