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Quantitative practice

Averages Questions with Answers

Mean of a set, weighted averages, and what happens to an average when one member enters or leaves. This page pools every averages question on the site (223 of them, from 64 exams, weighted towards Management, Banking, Railways) so you can drill the topic on its own instead of meeting four of them inside a full paper.

7% of the pool is graded hard on this site’s own scale and 30% easy, which is gentler than the average topic in this section.

Questions
223
Practice set
25 in 25 min
Difficulty
66/141/16
Negative marking
None
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Averages questions with solutions

6 from the 223-question pool, worked in full.

  1. 1. The average marks of 30 candidates in an exam is 58. If the average of the first 18 candidates is 55, find the average of the remaining 12.

    • A. 61.5
    • B. 62.5 ✓
    • C. 62
    • D. 63

    Solution. Total marks of 30 = 58×30 = 1,740. Total of first 18 = 55×18 = 990. Total of remaining 12 = 1,740−990 = 750. Average = 750/12 = 62.5.

  2. 2. The average of 8 numbers is 35. If one number is removed, the average of the remaining 7 becomes 33. Find the removed number.

    • A. 45
    • B. 47
    • C. 51
    • D. 49 ✓

    Solution. Sum of 8 numbers = 280. Sum of remaining 7 = 231. Removed number = 280 − 231 = 49.

  3. 3. Four numbers have a total of 92. What is their average? / चार संख्याओं का योग 92 है। उनका औसत क्या है?

    • A. 21 / 21
    • B. 22 / 22
    • C. 23 / 23 ✓
    • D. 24 / 24

    Solution. Average=92÷4=23. / औसत=92÷4=23।

  4. 4. The average marks of 25 candidates in an exam is 62. If the average of the first 15 candidates is 58, find the average of the remaining 10.

    • A. 66
    • B. 68 ✓
    • C. 69
    • D. 67

    Solution. Total marks of 25 = 62×25 = 1,550. Total of first 15 = 58×15 = 870. Total of remaining 10 = 1,550−870 = 680. Average = 680/10 = 68.

  5. 5. The average of 6 numbers is 34. If one of the numbers, 20, is replaced by 50, find the new average.

    • A. 36
    • B. 37
    • C. 38
    • D. 39 ✓

    Solution. The original sum is 34 × 6 = 204. Replacing 20 with 50 changes the sum to 204 − 20 + 50 = 234. The new average is 234 / 6 = 39.

  6. 6. The average of three consecutive odd numbers is 27. Find the largest of the three numbers.

    • A. 27
    • B. 31
    • C. 29 ✓
    • D. 25

    Solution. The three consecutive odd numbers are 25, 27, and 29, whose average is (25+27+29)/3 = 27, so the largest is 29.

Exams that set Averages

12 categories, led by Management, Banking, Railways.

Also set by IBPS RRB Office Assistant, IBPS RRB Officer Scale I, IBPS SO, IBSAT, IMU-CET, INET, IPMAT Indore, IPMAT Rohtak, JAIN JET, JIPMAT, KMAT Karnataka, KSDAT, KVS PRT, LIC AAO, MAH MBA CET, MAH UG CET, MAT, MH CET Law, MICAT, MPPSC SSE, NABARD Grade A, NCHM JEE, NIACL AO, NIFT, NIPER JEE, NMAT, OPSC OCS, RBI Assistant, RBI Grade B, RPF Constable, RPF Sub-Inspector, RRB Group D, RRB Junior Engineer, RRB NTPC, RRB Paramedical, SBI Clerk, SBI PO, SEBI Grade A, SIDBI Grade A & B, SNAP, SSC CGL, SSC CHSL, SSC CPO, SSC GD Constable, SSC MTS, SSC Selection Post, TANCET MBA, TG LAWCET, UKPSC PCS, UPPSC PCS, UPSC CSE, XAT. Browse all exams.

Averages: frequently asked questions

How many averages questions are there?

223, from the 64 exams here whose syllabus sets the topic. 30% are graded easy and 7% hard, which makes averages one of the more tractable topics in this section, against a 17% average.

Which exams ask averages questions?

64 of the exams on this site, weighted towards Management (16), Banking (14), Railways (6). Every question in this pool comes from one of their own mock tests, so the list below is the honest answer to whether the topic is worth your time.

Is averages hard?

7% of these 223 questions are graded hard and 30% easy, making it one of the more tractable topics in this section, against a 17% average.

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