42 cows can grace a field in 17 days.how long will 51 cow takes to grace the same field?
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let 51 cow take to grace the same field be X
cows. days
42. 17
51. X days
42 × 17 = 51 × X
42 × 17/51 = X
x = 14
51 cow will take 14 days to complete the work
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