1.

In a group of 24 people, the average number of their twitter followers is 36. Out of these, the first 12 people have on an average 15 followers. The average number of twitter followers for the remaining people is:1). 502). 653). 574). 87

Answer»

We know, Average of quantities = sum of all quantities/no. of quantities

The average number of TWITTER followers of all 24 people is 36.

∴ Sum of all 24 numbers = 36 × 24 = 864

The FIRST 12 people have on an average 15 followers.

So, Sum of these 12 numbers = 15 × 12 = 180

Sum of remaining 12 numbers = 864 – 180 = 684

∴ The average twitter followers of remaining 12 people = 684/12 = 57


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