Average ( 6 Questions & Solutions )

Click on the Question to open it's Explanation Video in YouTube.

Q.1) The average height of the students in a class of 10 is 105 cm. If 20 more students with an average height of 120 cm join the class, what will the new Average height be?

https://youtu.be/4hMN5IXD3ko

Q.2) The average consumption of petrol for a car for 7 months is 110 litres and for next 5 months it is 86 litres. What will be the overall Average monthly consumption?

https://youtu.be/HbCQtCw7oYc

Q.3) The average weight of 8 men is increased by 1.5 kg when one of the men who weighs 65 kg is replaced by a new man. What is the weight of the new man?
https://youtu.be/yYisGEpZbvE

Q.4) Of the four numbers, the average of the first three is 24 and that of the last three is 34. If the last number is 48, what is the first number?
https://youtu.be/t18MaOUNc_Q

Q.5) Eight boxes, all of different sizes, are placed in a row. 2008 books are to be packed in these boxes in such a way that each box receives 20 books more than it's next immediate smaller box. How many books would be packed in the largest box?
https://youtu.be/990agUJ6nzs


Q.6) The sum of 18 consecutive positive integers is a perfect square. What will be the smallest possible value of this Sum?
https://youtu.be/HhhtFA1qtGU



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