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ఒక పాఠశాల లైబ్రరీలో, సైన్స్ మరియు ఇంగ్లీష్ పుస్తకాలు నిష్పత్తి 10 ∶ 13. 400 సైన్స్ పుస్తకాలు ఉంటే, సైన్స్ పుస్తకాల డిమాండ్ పెరుగుదల కారణంగా, పాఠశాల అధికారం ద్వారా కొన్ని సైన్స్ పుస్తకాలు జోడించబడినందున  నిష్పత్తి 25 ∶ 26 అవుతుంది. అయిన జోడించబడిన సైన్స్ పుస్తకాల సంఖ్య ఎంత?

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SSC MTS (2022) Official Paper (Held On: 09 May 2023 Shift 2)
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  1. 50
  2. 100
  3. 120
  4. 80

Answer (Detailed Solution Below)

Option 2 : 100
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Detailed Solution

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ఇచ్చిన సమస్య:
 
ఇంగ్లీష్​, సైన్స్ పుస్తకాల యొక్క ప్రారంభ నిష్పత్తి = 10 : 13
 
ప్రారంభ సైన్స్ పుస్తకాల సంఖ్య = 400
 
సైన్స్ పుస్తకాల జోడింపు తర్వాత నిష్పత్తి = 25 : 26
 
సూత్రం:
 
జోడించబడిన సైన్స్ పుస్తకాల సంఖ్య = సైన్స్ పుస్తకాల యొక్క చివరి సంఖ్య - సైన్స్ పుస్తకాల ప్రారంభ సంఖ్య
 
సాధన:
 
ఇచ్చిన ప్రారంభ నిష్పత్తి నుండి, నిష్పత్తిలోని 10 భాగాలు 400 పుస్తకాలను సూచిస్తాయి.
 
⇒ ప్రతి భాగం 400/10 సూచించే పుస్తకాలు = 40 పుస్తకాలు
 
⇒ కాబట్టి, ఇంగ్లీష్​ పుస్తకాల సంఖ్య = 13 భాగాలు = 40 × 13 = 520 పుస్తకాల
 
ఇప్పుడు, సైన్స్ పుస్తకాలు కలిపిన తర్వాత సైన్స్ మరియు ఇంగ్లీష్​ పుస్తకాల నిష్పత్తి 25 : 26.
 
ఇచ్చిన, ఇంగ్లీషు పుస్తకాల సంఖ్య అలాగే ఉంటుంది (ఇంగ్లీష్ పుస్తకాలలో అదనంగా లేదు).
 
కాబట్టి నిష్పత్తిలో 1 భాగం 520/26 కు సమానం = 20 పుస్తకాలు.
 
⇒ కాబట్టి, అదనంగా, సైన్స్ పుస్తకాల సంఖ్య = 25 భాగాలు = 20 × 25 = 500 పుస్తకాలు
 
జోడించబడిన సైన్స్ పుస్తకాల సంఖ్య = సైన్స్ పుస్తకాల యొక్క చివరి సంఖ్య - సైన్స్ పుస్తకాల ప్రారంభ సంఖ్య
 
⇒ 500 - 400
 
⇒ 100
 
కాబట్టి, జోడించబడిన సైన్స్ పుస్తకాల సంఖ్య 100.
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Latest SSC MTS Updates

Last updated on Jun 26, 2025

-> SSC MTS 2025 Notification has been released by the Staff Selection Commission (SSC) on the official website on 26th June, 2025.

-> A total of 1075 Vacancies have been announced for the post of MTS and Havaldar in CBIC and CBN.

-> The last date to apply online will be 25th July 2025 as per the SSC Exam Calendar 2025-26.

-> The selection of the candidates for the post of SSC MTS is based on Computer Based Examination. 

-> Candidates with basic eligibility criteria of the 10th class were eligible to appear for the examination. 

-> Candidates must attempt the SSC MTS Mock tests and SSC MTS Previous year papers for preparation.

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