# CAT Practice : Averages, Ratios, Mixtures

Averages

## Averages

Q.46: If the average of 9 consecutive number is T. How much will the average increase by if the next 3 consecutive numbers are also added?
1. 3
2. 1.5
3. T
4. Can’t be determined

Choice B. 1.5

## Detailed Solution

Let the numbers be n, n+1, n+2……………….n+8
Average of these numbers = n + 4
When n +9, n+10, n+11 are added, the difference of these numbers from the earlier average = 5, 6, 7 respectively = 18
This 18 will increase the average by $\frac{18}{15}$ = 1.5

## Our Online Course, Now on Google Playstore!

### Fully Functional Course on Mobile

All features of the online course, including the classes, discussion board, quizes and more, on a mobile platform.

### Cache Content for Offline Viewing

Download videos onto your mobile so you can learn on the fly, even when the network gets choppy!

## More questions from Averages, Ratios, Mixtures

Averaages, Ratios and Mixtures XXXXXXXXXXXXXXXXXXXXXXXXXe.