AP Police Constable practice question
9 men can dig a canal in 14 days. In how many days will 42 men dig a canal of the same size?
From a AP Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 3 days
men × days is constant for the same work: 9 × 14 = 42 × d ⇒ d = 126/42 = 3 days. (More men ⇒ fewer days; the direct-proportion value 65.3 goes the wrong way.)
हिंदी में प्रश्न
9 आदमी एक नहर खोदने का काम 14 दिनों में कर सकते हैं। उतना ही काम 42 आदमी कितने दिनों में करेंगे?
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सही उत्तर: (C) 3 दिन
समान काम के लिए आदमी × दिन नियत है: 9 × 14 = 42 × d ⇒ d = 126/42 = 3 दिन। (अधिक आदमी ⇒ कम दिन; समानुपात वाला मान 65.3 गलत दिशा में जाता है।)
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