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Zepler [3.9K]
3 years ago
12

The sharks are fed three times a day. During the morning feeding , 2/15 tons of fish is fed. During the afternoon feeding, the w

eight of fish fed will be 1/15 ton more than the fish fed during the morning. If the total weight of fish fed in a day is 1/2 ton, how much is fed during the feeding at night?
Mathematics
1 answer:
DIA [1.3K]3 years ago
7 0

Answer:

1/6 ton of fish is fed during the feeding at night.

Step-by-step explanation:

The fish fed in the morning is \dfrac{2}{15} tons, and during after noon the fish fed is \dfrac{1}{15} more than in the morning; or

\dfrac{2}{15} +\dfrac{1}{15}

and let us call the tons of fish fed at night x, then if the total tons of wish fed during the is \dfrac{1}{2}, we have

\dfrac{2}{15}+(\dfrac{2}{15} +\dfrac{1}{15})+x=\dfrac{1}{2}

Let us add the numerators on the left side and we get:

\dfrac{5}{15} +x=\dfrac{1}{2}

and subtract \dfrac{5}{15} from both side to isolate x:

x=\dfrac{1}{2} -\dfrac{5}{15}

and since \dfrac{5}{15} =\dfrac{1}{3}, we have

x=\dfrac{1}{2}-\dfrac{1}{3}

the common denominator of the fractions is 6; therefore, we rewrite the equation as

x=\dfrac{3}{6}-\dfrac{2}{6}

and subtract the numerators to get:

\boxed{x=\dfrac{1}{6} }

which the number of tons fed during the feeding at night.

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