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Compound Proportion.(Arrow method), | Inverse Variation | Tricks for Work and Time Problem Shortcuts
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COMPOUND VARIATION
DIRECT AND INVERSE VARIATION IN HINDI
Chain rule is a very important part of time and work in quantitative aptitude tests. This video discusses the basics of magical arrowhead technique for solving problems of chain rule or compound proportion in aptitude.
A must watch if you are preparing for ssc, rrb, rrb ntpc, rrb group d, MBA, upsc, ibps, bank po, uptet, nda, GMAT, ssc chsl, rpf, afcat, indiabix, elitmus, amcat, cat exam, maths olympiad, SAT or other similar exams.
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This video solves following 4 mathematics questions:
QUESTION 1: In a factory, if 35 workers can make 49 products in 3 days. Then, 20 workers, working for 6 days, will make how many products?
QUESTION 2: 64 men working 12 hours a day, dig a pond 50 m long, 2 m wide and 2 m deep in 5 days. In how many days, working 8 hours a day, will 80 men dig a pond 75 m long, 4 m wide and 3 m deep?
QUESTION 3: If 1 man or 2 women or 3 children can harvest a field in 55 days. Then, 1 man and 1 woman and 1 child together will harvest the same field in how many days?
QUESTION 4: 2 men and 7 boys can clean an office in 14 days. 3 men and 8 boys can do the same in 11 days. In how many days, will 8 men and 6 boys will clean the office which is 3 times bigger?
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प्रश्न 1: यदि एक कारखाने में, 35 कर्मचारी 3 दिन में 49 उत्पाद बनाते हैं। तो, 20 कर्मचारी, 6 दिन काम कर के, कितने उत्पाद बनाएंगे?
प्रश्न 2: यदि 64 कामगार प्रतिदिन 12 घंटे काम कर के, 5 दिनों में एक तालाब खोदते हैं, जो है, 50 मीटर लंबा, 2 मीटर चौड़ा और 2 मीटर गहरा है । तो, कितने दिनों में, 8 घंटे एक दिन काम करते हुए, 80 कामगार एक तालाब जो 75 मीटर लंबा, 4 मीटर चौड़ा और 3 मीटर गहरा, खोदेंगे?
प्रश्न 3: यदि 1 पुरुष या (अथवा) 2 महिलाएँ या 3 बच्चे, 55 दिनों में, एक खेत में फसल काट सकते हैं। तो, 1 आदमी और 1 महिला और 1 बच्चा एक साथ, उसी खेत में कितने दिनों में कटाई करेंगे?
प्रश्न 4: यदि 2 पुरुष और 7 लड़के 14 दिनों में एक ऑफिस की सफाई कर सकते हैं। और, 11 दिनों में 3 पुरुष और 8 लड़के भी उसी ऑफिस की सफाई कर सकते हैं। तो, कितने दिनों में, 8 पुरुष और 6 लड़के एक ऑफिस की सफाई करेंगे जो 3 गुना बड़ा है?
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