Mastering Arithmetic for SBI Clerk 2023: A Comprehensive Guide

In this session, Navneet Tiwari, a teacher, trainer, and motivational speaker, welcomes students to a marathon of arithmetic questions specifically designed for the SBI Clerk 2023 examination. The session aims to address the demand from students for a focused review of arithmetic problems that are expected to appear in the exam.

Importance of the Session

The session is crucial for students preparing for the SBI Clerk exam, as it promises to cover 100 of the most expected arithmetic questions. Tiwari emphasizes the importance of watching the entire session to grasp the concepts thoroughly, as the questions discussed are likely to be relevant for any shift of the exam.

Key Highlights of the Session

1. Double Validity Offer: Tiwari mentions a special offer on the Bank Maha Pack, where students can get double validity on their subscriptions, making it an attractive option for serious candidates.
2. Study Materials: He encourages students to keep a small book handy for practice, suggesting that even a few minutes of daily practice can significantly improve their calculation skills.
3. Question Types: The session includes a variety of question types, ranging from basic arithmetic to more complex problems involving variables and ratios.

Sample Questions and Solutions

Question 1: Speed of a Train

Problem: If a train crosses a pole in t seconds and crosses a man running in the same direction at a speed of 36 km/hr in 2t seconds, find the speed of the train.

Solution:

• Let the speed of the train be x m/s.

• The distance covered when crossing the pole is equal to the length of the train, which is x * t.

• When crossing the man, the relative speed is (x - 10) m/s (since 36 km/hr = 10 m/s).

• The equation becomes:

  Length of train = (x - 10) * 2t

  Setting the two equations equal gives:

  x * t = (x - 10) * 2t

  Simplifying leads to:

  x = 20 m/s or 72 km/hr.

Question 2: Age Problem

Problem: The ratio of ages of A and B was 23:30 years ago. If in 1.5 years, the sum of their ages will be 113 years, find the product of their present ages.

Solution:

• Let the present ages of A and B be x and y respectively.

• From the first condition, we have:

  x - 23 = y - 30

  From the second condition:

  x + 1.5 + y + 1.5 = 113

  Solving these equations gives:

  x = 45 years, y = 68 years

  Therefore, the product of their ages is 45 * 68 = 3060.

Question 3: Profit and Loss

Problem: A shopkeeper sold an article after allowing two successive discounts of 10% and 20%. If he earned an 8% profit on selling the article, find the cost price of the article.

Solution:

• Let the cost price be C and the marked price be M.

• The effective discount can be calculated as:

  Effective Discount = 10 + 20 - (10 * 20 / 100) = 28%

  Therefore, the selling price S is:

  S = M * (1 - 0.28) = 0.72M

  Given that the profit is 8%, we have:

  S = C * 1.08

  Setting the two equations equal gives:

  0.72M = 1.08C

  Solving for C gives the cost price.

Conclusion

The session led by Navneet Tiwari provides a comprehensive review of arithmetic concepts essential for the SBI Clerk 2023 exam. By practicing the questions discussed and understanding the underlying principles, students can enhance their problem-solving skills and increase their chances of success in the examination.

Final Tips

• Watch the session multiple times to reinforce learning.
• Practice regularly using the provided questions and materials.
• Take advantage of special offers for study materials to maximize your preparation.

By following these guidelines and engaging with the content, candidates can effectively prepare for the arithmetic section of the SBI Clerk exam.