SSC GD Constable previous year question
M1 alone can do a work in 14 days and M2 alone can do the same work in 70 days. With the help of M3, they finish the same work in 7 days. In how many days can M3 alone do the same work?
Asked in SSC GD Constable 2024: 23 Feb 2024 Shift 1 · Quantitative Aptitude
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Correct answer: (D) 17.5 days
Combined (all three) rate = 1/7. M1+M2 rate = 1/14+1/70=3/35. M3's rate = 1/7−3/35=2/35, giving M3 alone 35/2=17.5 days.
हिंदी में प्रश्न
M1 अकेले एक काम को 14 दिनों में पूरा कर सकता है और M2 अकेले उसी काम को 70 दिनों में पूरा कर सकता है। M3 की सहायता से वे उसी काम को 7 दिनों में पूरा करते हैं। M3 अकेले उसी काम को कितने दिनों में पूरा कर सकता है?
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सही उत्तर: (D) 20 दिन
Combined (all three) rate = 1/7. M1+M2 rate = 1/14+1/70=3/35. M3's rate = 1/7−3/35=2/35, giving M3 alone 35/2=17.5 days.
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