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OpenStudy (anonymous):
apply the principle of variATION to find how long 25 men will take to plough 30 acres, if 5 men take 9 days to plough 10 acres of land??
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OpenStudy (anonymous):
I dont know whether this is variation or not but still- 5men-9days-10acres 1man-45days-10acres 1man-135days-30acres therefore, 25men-135/25 days-30acres i.e, 25men-5.4 days-30acres Therefore they will take 5.4 days !!
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