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### Question 1

A box contains 5 marbles each having a weight of 66 grams. The box also contains 25 marbles each having a weight of 96 grams. What is the average weight of all the marbles in the box?

### Question 2

The sales(in rupees) of a gift shop for six consecutive days is 5028, 3042, 4446, 786, 5376 and 2838. What is the overall average sale for these six days?

### Question 3

Two of the 28 numbers are 24 and 58, If these two are excluded the average of the remaining 26 numbers is 1 more than the average of all the 28 numbers. What is the average of all the 28 numbers?

### Question 4

If the average of p and q is 20, the average of q and r is 54, and of r and p is 64, then what is the value of p?

**A**

30.

**B**

31.

**C**

29.

**D**

32.

**Soln.**

**Ans: a**

We have three equations (p + q)/2 = average of pq, (q + r)/2 = average of qr and (r + p)/2 = average of rp. Adding these three we get p + q + r = (average of pq + average of qr + average of rp) = (20 + 54 + 64) = 138. So p = 138 - (q + r) = 138 - (2 × average of q and r) = 138 - 2 × 54 = 30.

### Question 5

What is the increase in the average of 11 numbers if the number 13 is replaced by 112?

### More Chapters | See All...

Missing Numbers | Problems on Trains | Course of Action | Profit and Loss | Simple Interest | Coding Decoding | Square and Cube Roots | Venn Diagrams | Alphabet Number Series | Hidden Figures | More...

This Blog Post/Article "Averages Quiz Set 011" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.