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balandron [24]
3 years ago
5

Ned caught 1/3 pound of fish. Sarah caught 5/12 pound of fish. Jesse caught 1/6 pound of fish. How many in total did they catch?

Mathematics
2 answers:
Keith_Richards [23]3 years ago
8 0
They caught: 11/12 pounds of fish
First you need to change them to a same common denominator. Since 3 and 6 already go into 12, you just have to change 1/3 and 1/6 to a denominator with 12.
First you need to change 1/3 to 4/12. By doing that, you do: 1/3x4/4=4/12.
You then have to change 1/6 to 2/12. By doing that, you do: 1/6x2/2=2/12.
Then you just add up all the fractions and simplify: 4/12+2/12+5/12=11/12.
You can't simplify 11/12 any further so you're answer would be:
They caught 11/12 pounds of fish in total.
Hope this helps! :D
cupoosta [38]3 years ago
7 0
Ok so since the largest denominator is 12 we want to get the other denominators the same so it is easier to add together. Multiply 3 by 4 to get a denominator, then multiply 1 by 4 and you'll get 4/12. Then multiply 6 by 2 and then 1 by 2 and you'll get 2/12. Add all 3 of the fractions to get 11/12 pounds of fish. Hope this helps!
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Answer as an exact fraction = 5/18

Answer as an approximate decimal = 0.2778

Answer as an approximate percentage = 27.78%

============================================================

Explanation:

x = result of the first die

y = result of the second die

(x,y) paired together shows the results of both dice at the same time.

Something like (x,y) = (4,2) means we got 4 on the first die and 2 on the second die.

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Let's list the ways of rolling a 6

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There are 5 ways to roll a 6. Each pair listed has the property x+y = 6.

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List all the ways of getting doubles

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There are 6 ways to roll doubles. Each pair mentioned has x = y.

--------

We have 5+6 = 11 items listed above. However, there are only 10 unique pairs though because (3,3) was listed twice. So we could say 5+6-1 = 11-1 = 10.

This is out of 6*6 = 36 different ways to roll the two dice. The probability is therefore 10/36 = 5/18.

Using a calculator, 5/18 = 0.2778 = 27.78%

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