How do you work this out?

The amount of hay in a barn will feed 40 cows for 12 weeks.

For how many weeks could you feed 15 cows with the same amount of hay?

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GJOFJ3 · 61-69, M

32 weeks

fdurst · 56-60, M

@GJOFJ3 the question was "how do you work this out"

GJOFJ3 · 61-69, M

@fdurst 40÷15=2.66
2.66×12=32

fdurst · 56-60, M

@GJOFJ3 agreed.
I posted that earlier.