by Naveen Neredimalli
Thu 04 Apr 2024 05:49 PM
271

To excel in the quanti section of the CAT exam, focus on key topics like Arithmetic, which holds significant weightage. Averages, Percentages, Ratios & Proportions, Mixtures, Allegations, Time Speed & Distance, and Time & Work are crucial concepts within Arithmetic. Practicing diverse quality questions on averages, including core concepts, weighted averages, and alligations, is essential. CAT questions on averages may be tricky but not overly difficult. Utilize CAT previous papers for understanding trends and changes in the exam pattern. Taking free CAT mock tests helps in assessing strengths and weaknesses.

An elevator has a weight limit of 630 kg. It is carrying a group of people of whom the heaviest weighs 57 kg and the lightest weighs 53 kg. What is the maximum possible number of people in the group?

correct answer:-**11**

A class consists of 20 boys and 30 girls. In the mid-semester examination, the average score of the girls was 5 higher than that of the boys. In the final exam, however, the average score of the girls dropped by 3 while the average score of the entire class increased by 2. The increase in the average score of the boys is

correct answer:-**1**

The average height of 22 toddlers increases by 2 inches when two of them leave this group. If the average height of these two toddlers is one-third the average height of the original 22, then the average height, in inches, of the remaining 20 toddlers is

correct answer:-**3**

In an apartment complex, the number of people aged 51 years and above is 30 and there are at most 39 people whose ages are below 51 years. The average age of all the people in the apartment complex is 38 years. What is the largest possible average age, in years, of the people whose ages are below 51 years?

correct answer:-**4**

~~A CAT aspirant appears for a certain number of tests. His average score increases by 1 if the first 10 tests are not considered, and decreases by 1 if the last 10 tests are not considered. If his average scores for the first 10 and the last 10 tests are 20 and 30, respectively, then the total number of tests taken by him is~~

correct answer:-**60**

The average of 30 integers is 5. Among these 30 integers, there are exactly 20 which do not exceed 5. What is the highest possible value of the average of these 20 integers?

correct answer:-**3**

Ramesh and Gautam are among 22 students who write an examination. Ramesh scores 82.5. The average score of the 21 students other than Gautam is 62. The average score of all the 22 students is one more than the average score of the 21 students other than Ramesh. The score of Gautam is

correct answer:-**2**

A batsman played n + 2 innings and got out on all occasions. HisÂ average score in these n + 2 innings was 29 runs and he scored 38 andÂ 15 runs in the last two innings. The batsman scored less than 38 runsÂ in each of the first n innings. In these n innings, his average score wasÂ 30 runs and lowest score was x runs. The smallest possible value of xÂ is

correct answer:-**3**

Onion is sold for 5 consecutive months at the rate of Rs 10, 20, 25, 25, and 50 per kg, respectively. A family spends a fixed amount of money on onion for each of the first three months, and then spends half that amount on onion for each of the next two months. The average expense for onion, in rupees per kg, for the family over these 5 months is closest to

correct answer:-**2**

In a football tournament, a player has played a certain number of matches and 10 more matches are to be played. If he scores a total of one goal over the next 10 matches, his overall average will be 0.15 goals per match. On the other hand, if he scores a total of two goals over the next 10 matches, his overall average will be 0.2 goals per match. The number of matches he has played is

correct answer:-**10**

The arithmetic mean of scores of 25 students in an examination is 50. Five of these students top the examination with the same score. If the scores of the other students are distinct integers with the lowest being 30, then the maximum possible score of the toppers is

correct answer:-**92**

The average weight of students in a class increases by 600 gm when some new students join the class. If the average weight of the new students is 3 kg more than the averageÂ weight of the original students, then the ratio of the number of original students to the number of new students is

correct answer:-**3**

The average of three integers is 13. When a natural number n is included, the average of these four integers remains an odd integer. The minimum possible value of n is

correct answer:-**3**

Manu earns â‚¹4000 per month and wants to save an average of â‚¹550 per month in a year. In the first nine months, his monthly expense was â‚¹3500, and he foresees that, tenth month onward, his monthly expense will increase to â‚¹3700. In order to meet his yearly savings target, his monthly earnings, in rupees, from the tenth month onward should be

correct answer:-**1**

If a and b are non-negative real numbers such that a+ 2b = 6, then the average of the maximum and minimum possible values of (a+ b) is

correct answer:-**4**

Five students, including Amit, appear for an examination in which possible marks are integers between 0 and 50, both inclusive. The average marks for all the students is 38 and exactly three students got more than 32. If no two students got the same marks and Amit got the least marks among the five students, then the difference between the highest and lowest possible marks of Amit is

correct answer:-**4**

In an examination, the average marks of students in sections A and B are 32 and 60, respectively. The number of students in section A is 10 less than that in section B. If the average marks of all the students across both the sections combined is an integer, then the difference between the maximum and minimum possible number of students in section A is

correct answer:-**63**

Five students appeared for an examination. The average mark obtained by these five students is 40. The maximum mark of the examination is 100, and each of the five students scored more than 10 marks. However, none of them scored exactly 40 marks.

Based on the information given, which of the following MUST BE true?

correct answer:-**5**

There are three persons A, B and C in a room. If a person D joins the room, the average weight of the persons in the room reduces by x kg. Instead of D, if person E joins the room, the average weight of the persons in the room increases by 2x kg. If the weight of E is 12 kg more than that of D, then the value of x is

correct answer:-**3**

In a company, 20% of the employees work in the manufacturing department. If the total salary obtained by all the manufacturing employees is one-sixth of the total salary obtained by all the employees in the company, then the ratio of the average salary obtained by the manufacturing employees to the average salary obtained by the nonmanufacturing employees is

correct answer:-**2**

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