Kamlesh can do a piece of work in 36 days and Vimlesh can do 50% of the same work in 24 days. Suresh can complete 25% of the work in 4 days with the help of Kamlesh. Then find the number of days in which Suresh can complete 12.5% of the work with the help of Vimlesh?
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18
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4.5
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2.25
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9
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None of these
C
Correct answer
Explanation
Calculate work rates: Kamlesh = 1/36 work per day. Vimlesh does 50% in 24 days, so 100% in 48 days = 1/48 per day. Suresh + Kamlesh do 25% in 4 days, so 1/16 per day together, meaning Suresh alone = 1/16 - 1/36 = 5/144 per day. Suresh + Vimlesh combined rate = 5/144 + 1/48 = 8/144 = 1/18 per day. For 12.5% (1/8) of work: time = (1/8) / (1/18) = 18/8 = 2.25 days.