Subtracting 81925

Three horses will eat 36 kg of oats in two days. How many kilograms do 5 horses need for 4 days? Help yourself by adding or subtracting.

Correct answer:

m2 =  120 kg

Step-by-step explanation:

m1=36 kg  k=m1/(3 2)=36/(3 2)=6 kg/d  m2=5 4 k=5 4 6=120 kg

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