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

The average weight of 10 parcels is 1.7 kg. The average weight is reduced by 60 grams when a new parcel is added. How much is the weight of the new parcel?

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

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? 

What is the age of A in a group of 6 students – A, B, C, D, E and F whose average age is 16 years?
Statement I: Total age of B and D is 30 years
Statement II: Total age of E and F is 31 years.
Statement III: Total age of A is 10 years.

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

The average marks of 42 students in an examination, were 64. Later it was found that the marks of three students were misread as 72, 58 and 44 instead of the actual marks 64, 42 and 26 respectively. What are the correct average marks?