Multiple choice

A group of students earned Rs. 385 in a fair. If their average income is Rs. 55, then number of students in the group is

  1. 7

  2. 8

  3. 9

  4. 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Average = Total / Number. 55 = 385 / N. N = 385 / 55 = 7.

AI explanation

To find the number of students, divide the total income earned by the average income per student using the basic average formula. The total income is Rs. 385 and the average income is Rs. 55, so the number of students is 385 divided by 55. Performing this division gives the result of 7, meaning there are exactly 7 students in the group.

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