Hay bags

4 cows eat 16 hay bags in 5 days. How many bags will eat 5 cows in 7 days?

Correct result:

x =  28

Solution:

k=16/5/4=45=0.8  x=5⋅ 7⋅ k=5⋅ 7⋅ 0.8=28k=16/5/4=\dfrac{ 4 }{ 5 }=0.8 \ \\ \ \\ x=5 \cdot \ 7 \cdot \ k=5 \cdot \ 7 \cdot \ 0.8=28

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