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### Question 1

The average weight of 13 students of a class is 39 Kg, whereas the average weight of remaining 17 students is 30 Kg. What is the average weight of all 30 students?

**A**

$33{9/10}$.

**B**

$35{2/29}$.

**C**

$32{25/31}$.

**D**

$36{9/28}$.

**Soln.**

**Ans: a**

Total weight of 13 students is 13 × 39 = 507. Similarly, the total weight of remaining 17 students is 17 × 30 = 510. The total weight of all 30 students is 507 + 510 = 1017. So the average = 1017/30 = $33{9/10}$.

### Question 2

What is the increase in the average of 14 numbers if the number 12 is replaced by 152?

### Question 3

There are three sections in school with 30, 30 and 40 students respectively. The average weight of a student in these sections, respectively, is 6, 2 and 6 Kg. What is the average weight of all the the students of the combined sections?

### Question 4

Two of the 26 numbers are 22 and 50, If these two are excluded the average of the remaining 24 numbers is 1 more than the average of all the 26 numbers. What is the average of all the 26 numbers?

### Question 5

The sales(in rupees) of a gift shop for six consecutive days is 1254, 5016, 4230, 876, 984 and 2076. What is the overall average sale for these six days?

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This Blog Post/Article "Averages Quiz Set 015" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.