If 15 oxen or 20 cows can eat the grass of a field in 80 days, then in how many days will 6 oxen and 2 cows eat the same grass?
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Correct Answer: Option D
Explanation:
15 oxen take 80 days so, 6 oxen take \(x\) days
\(x=15^{*} 80 / 6=200\) days
20 oxen also take 80 day. So, 2 cows take y days
\(y=20^{*} 80 / 2=800\) days
Together work will be done in \(800 \star 200 /(800+200)=160\) days
15 oxen take 80 days so, 6 oxen take \(x\) days
\(x=15^{*} 80 / 6=200\) days
20 oxen also take 80 day. So, 2 cows take y days
\(y=20^{*} 80 / 2=800\) days
Together work will be done in \(800 \star 200 /(800+200)=160\) days