in a grass field, If there are 40 cows, they could eat for 40 days. If there are

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โœช Choose the correct option.

in a grass field, If there are 40 cows, they could eat for 40 days. If there are 30 cows, they could eat for 60 days. Than if 20 cows, How much day they could eat?

A. 98 Days.
B. 80 Days.
C. 67 Days.
D. 87 Days.

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