30 pens and 75 pencils altogether were purchased for Rs .510. If the average price of a pencil was Rs. 2, what was the average price of a pen? 

Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?

The average of 19 numbers is 24. If each number is multiplied by 3, what is the new average?

The average of 5 consecutive integers starting with ‘M’ is ‘K’. What is the average of 6 consecutive integers stating with (m+1)?

The average weight of P and his three friends is 55 kg. If P is 4 kg more than the average weight of his three friends, what is P's weight (in kg)?

The average monthly income of A and B is Rs.15,050 , and the average monthly income of B and C is Rs.15,350 and the average income of A and C is Rs.15,200. The monthly income of A is.

The average weight of three men is increased by 4 kg when one of them, whose weight is 100 kg, is replaced by another man. What is the weight of the new man? 

The average of all the numbers between 6 and 50 which are divisible by 5 is