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 A student got twice as many sums wrong as he got right. If he attempted 48 sums in all, how many sums did he solve correctly?

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CSIR CERI JSA Official Paper-I (Held On: 2022)
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  1. 12
  2. 16
  3. 18
  4. 24

Answer (Detailed Solution Below)

Option 2 : 16
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Detailed Solution

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Given:

Total sums attempted = 48

A student got twice as many sums wrong as he got right.

Calculation:

Let the number of sums solved correctly be x.

Number of sums solved wrong = 2x

Total sums attempted = x + 2x = 48

⇒ x + 2x = 48

⇒ 3x = 48

⇒ x = 48 / 3

⇒ x = 16

The number of sums solved correctly is 16.

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Last updated on May 21, 2025

->The CSIR Junior Secretariat Assistant Provisional Response Sheet has been released on 21st May 2025 at the official website.

-> The CSIR Junior Secretariat Assistant Notification 2025 written examination dates has been released for Advt No. CRRI/02/PC/JSA-JST/2025.

-> Candidates had applied online from 22nd March to 21st April 2025.  

-> The CSIR JSA salary ranges from INR 19,900 - INR 63,200 (Indian Institute of Petroleum, Dehradun) and INR 35,600 (Indian Institute of Toxicology Research).

-> The selection of candidates for this post will be based on a Written Exam, followed by a Computer Typing Test.

-> Prepare for the exam with CSIR Junior Secretariat Assistant Previous Year Papers.

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