RBI Assistant Prelims practice question
The average number of sit-ups completed by 20 trainees in a fitness test is 45. A trainee who completed 30 sit-ups drops out and is replaced by a new trainee who completes 55 sit-ups. Find the new average number of sit-ups.
From a RBI Assistant Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (D) 46.25
Change in total sit-ups = 55-30 = 25, spread over 20 trainees = 25/20 = 1.25. New average = 45+1.25 = 46.25.
हिंदी में प्रश्न
एक फिटनेस परीक्षण में 20 प्रशिक्षुओं द्वारा किए गए सिट-अप्स की औसत संख्या 45 है। 30 सिट-अप्स करने वाला एक प्रशिक्षु बाहर हो जाता है और उसकी जगह 55 सिट-अप्स करने वाला नया प्रशिक्षु आता है। सिट-अप्स की नई औसत संख्या ज्ञात करें।
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सही उत्तर: (D) 46.25
कुल सिट-अप्स में परिवर्तन = 55-30 = 25, जो 20 प्रशिक्षुओं में बंटता है = 25/20 = 1.25। नया औसत = 45+1.25 = 46.25।
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