Shortcut Methods For Average-Part1

This video teaches you how to solve the Average based questions in fraction of seconds 

Shortcut Methods for Average

Solve the questions:

1.    There are 5 no and their average is 36. While the first two no. average is 34 and next two no average is 40. Calculate the fifth number?

2.    Average age of 15 students in a group is 23 yrs. One boy leaves the group which the average age is increased by one year. Calculate the age of the boy who left the group?

3.    Average age of 22 students in a group is 59 kg. One boy leaves the group which the average weight is increased by 2 kg. Calculate the weight of boy who left the group?

4.    Average age of 17 students in a group is 21 years. One boy leaves a group, which the average age is increased by 6 months. Calculate the age of the boy who left the group?

5.    Average age of father and his son is 48 years. If the present age ratio is 11:5 then calculate the father’s present age?

6.    The average age of man and his daughter is 16 years. If the present ratio 7:1 then what is the age of daughter?

7.    Average salary of principal and vice principal is 10 thousand after some times, principal salary is increased by 20% and vice principal’s salary is increased by 30% calculate the new average salary?

8.    A bats man has certain average up to 10^th innings. In 11^th innings he made 100 runs which the average run is increased by 6 runs. Calculate the average in the end of 11^th innings.

9.    The average run of 20 innings is 15. In the 21 inning how many runs made by the bats man which the average run is increased by 3 runs?

10. A batsman has certain average up to 16 innings. In 17 innings, he made 89 run, which the average run is increased by 3 runs?

Calculate the average end of 17 innings?

Calculate the total run he made in the end of 17innings?