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Mike bought 12 1/2 pounds of dog food to feed the animals at the kennel. The dogs ate only ate 3/5 ofthe food. How many pounds of food did the dogs eat?

Sagot :

[tex]7.5lbs[/tex]

1) Note that Mike bought 12 1/2 lbs and the dogs ate 3/5 of those 12 1/2 lbs. So let's first rewrite that mixed number into an improper fraction for convenience:

[tex]12\frac{1}{2}=\frac{2\times12+1}{2}=\frac{25}{2}[/tex]

Note that we kept the denominator.

2) So now, let's calculate how much food did the dogs eat by multiplying

3/5 by this 25/2

[tex]\frac{3}{5}\times\frac{25}{2}=\frac{75}{10}=\frac{15}{2}=7.5lbs[/tex]

Note that we simplified that fraction to get an irreducible number