64 kg of feed are needed to feed 20 dogs for 16 days. The total amount of feed needed to feed 24 dogs for 15 days would be:
A) 72 kg
B) 32 kg
C) 84 kg
D) 56 kg
Had the right proportional and the inversely proportional, but still making like a equity, in school when child I learn using right and inversely proportional, but this way we tink:
Of one side we have consequences and of the other results, if not, so let say I am saying that 20 dogs in 16 days eat 64kg, so consequence is consume of one side and what erodes of the other side, this way appear even that is easy so is:
20dogs x 16days = 64kg
and I want to know: 24dogs x 15 = X, rule of 3 multiplying in cross simplifying we have: 72kg.
Rute Bezerra de Menezes Gondim
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