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Mathematics, 01.12.2021 20:50 lzrd3rik

In a field, 17 cows can finish the whole grass in the field for 30 days. 19 cows can finish in 24 days. If a group of cows eat the grass for 6 days, then 4 cows are sold, the remaining cows can finish the grass in 2 days. What is the initial number of cows before 4 of them are sold

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In a field, 17 cows can finish the whole grass in the field for 30 days. 19 cows can finish in 24 da...
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