# CAT Quantitative Aptitude Questions | CAT Ratios, Mixtures, Alligations and Averages Questions

###### CAT Questions | Averages | Averages - Numbers

The question is from CAT Ratio, Mixtures and Averages. What would happen to the average when we add three consecutive number to a series? CAT exam is known to test on basics rather than high funda ideas. A range of CAT questions can be asked from Ratios and Proportions, Mixtures, Alligations and Averages. Make sure you master the topics. 2IIMs CAT questions bank provides you with CAT questions that can help you gear for CAT Exam CAT 2020.

Question 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

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### Explanatory Answer

##### Method of solving this CAT Question from Ratio, Mixtures and Averages: How the individual data points affect the average?

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 The question is "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?" ##### Hence, the answer is "1.5". Choice B is the correct answer. ###### Best CAT Online Coaching Try upto 40 hours for free Learn from the best! ###### Best Indore IPM & Rohtak IPM CoachingSignup and sample 9 full classes for free. Register now! ###### Already have an Account? ###### CAT Coaching in ChennaiCAT 2021Enroll at 49,000/- 44,000/- Online Classroom Batches Starting Now! ###### Best CAT Coaching in ChennaiPrices slashed by Rs 4000/- Attend a Demo Class ##### Where is 2IIM located? 2IIM Online CAT Coaching A Fermat Education Initiative, 58/16, Indira Gandhi Street, Kaveri Rangan Nagar, Saligramam, Chennai 600 093 ##### How to reach 2IIM? Phone:$91) 44 4505 8484
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