average Model Questions & Answers, Practice Test for ibps clerk prelims
A batsman in his 12th innings makes a score of 63 runs and there by increases his average scores by 2. What is his average after the 12th innings?
Answer: (c)
Avg. after 11 innings = x
Total score after 12
innings = 11x + 63.
Avg. after 12 innings = x + 2
${11x + 63}/12 = x + 2$
11x + 63 = 12x + 24
63 – 24 = 12x – 11x = x = 39.
Avg. after 12th innings
= 39 + 2 = 41
We write down all the digits from 1-9 side by side. Now we put '+' between as many digits as we wish to, so that the sum of numbers become 666. It is explained below1 2 3 4 5 6 7 8 9 = 666Now suppose we put plus signs at following places.12 + 345 + 67 + 89 = 513Since there are four numbers, so the average can be calculated by dividing the sum by 4. What is the average if the sum is 666?
Answer: (d)
We can get the sum 666 in two ways:
1 + 2 + 3 + 4 + 567 + 89 = 666
or 123 + 456 + 78 + 9 = 666
So, average cannot be uniquely determined.
There are 100 students in 3 sections A, B and C of a class. The average marks of all the 3 sections was 84. The average of B and C was 87.5 and the average marks of A is 70. The number of students in A was
Answer: (a)
Total marks of all three sections = 84 × 100 = 8400
total marks of (B + C) = 87.5 $(n_2 + n_3)$
total marks of A = 70 × $n_1$
$n_1 + n_2 + n_3$ = 100 ...(1)
$70n_1 + 87.5 n_2 + 87.5 n_3$ = 8400 ...(2)
Multiplying equation (1) by 87.5 and subtract from equation (2)
We get 17.5 $n_1$ = 350 ⇒ $n_1$ = 20
In an Entrance Examination Ritu scored 56 percent marks, Smita scored 92 percent marks and Rina scored 634 marks. The maximum marks of the examination are 875. What are the average marks scored by all the three girls together?
Answer: (d)
Marks scored by Ritu = 875 × $56/100$ = 490
Marks scored by Smita = 875 × $92/100$ = 805
∴ Average marks scored by all the three together
= ${490 + 805 + 634}/3 = 1929/3$ = 643
The ratio of Rita’s age to the age of her mother is 3 : 11. The difference of their ages is 24 yrs. What will be the ratio of their ages after 3 yrs?
Answer: (a)
Difference in ratios = 8
Then 8 ≡ 24 ∴ 1 ≡ 3
i.e., value of 1 in ratio is equivalent to 3 yrs
Thus, Rita's age = 3 × 3 = 9 yrs
Mother's age = 11 × 3 = 33 yrs.
After 3 years, the ratio = 12 : 36 = 1 : 3
ibps clerk prelims IMPORTANT QUESTION AND ANSWERS
ibps clerk prelimsTOPICS
Read More
ibps clerk prelims 2024 SYLLABUS
Read More
ibps clerk prelims 2024 NOTIFICATION
Read More
All Exams
-
SSC
»
Model MCQ Test [Syllabus Wise], Syllabus, Notification -
BANKING
»
Model MCQ Test [Syllabus Wise], Syllabus, Notification -
TNPSC
»
Model MCQ Test [Syllabus Wise], Syllabus, Notification
RECENT BLOGS
![SSC CHSL 2023 Tier 2: Syllabus PDF & Exam Pattern [Changed]](https://careericons.com/adminicon/bunch/images/ssc-chsl-tier-2-2023-new-revised-syllabus-pdf-s.jpg "SSC CHSL 2023 Tier 2: Syllabus PDF & Exam Pattern [Changed]")
Recently Added Subject & Categories For All Competitive Exams
Syllogism Practice Questions Answers PDF - IBPS Clerk 2024
Practice Verbal Reasoning Syllogism multiple choice questions and answers with Fully solved explanation, PDF for the IBPS Clerk Prelims 2024 Bank Exam
Continue Reading »
IBPS Clerk Prelims 2024 Synonyms Questions Solved Answers
Most important IBPS Clerk Prelims 2024 Synonyms and Antonyms multiple choice questions and answers with detailed solutions, English vocabulary PDF Download
Continue Reading »
New Cloze Test Questions and Answers PDF - IBPS Clerk 2024
The most important Cloze Test questions with detailed answers for upcoming IBPS Clerk prelims 2024. Latest English verbal ability practice MCQs, PDF
Continue Reading »
Mensuration Aptitude Practice Mcq Questions IBPS Clerk 2024
Most Important Practice Mensuration aptitude multiple choice questions, answers with detailed solutions, PDF beginner to advanced for IBPS Clerk Prelims 2024
Continue Reading »