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Anarel [89]
3 years ago
15

when a boy complete 5 rounds around circular pond, he covers a distance of 1100 m. i)Find the perimeter of the pond.​

Mathematics
2 answers:
Law Incorporation [45]3 years ago
8 0
I think it’s 220m. Since 5 rounds are equal to 1100m then you divide by 5 to see how much he covers in one
Ludmilka [50]3 years ago
8 0

The perimeter of circular pond is 1100 m

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Answer:

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Step-by-step explanation:

The question asks for the total cost of a notebook and pen together. We don't need to find their individual costs in order to answer the question.

Sometimes we get bored solving systems of equations in the usual ways. For this question, let's try this.

The first equation has one more notebook than pens. The second equation has 4 more notebooks than pens. If we subtract 4 times the first equation from the second, we should have equal numbers of notebooks and pens.

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The total cost for one notebook and one pen is $2.50.

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<em>Additional comment</em>

The first equation has 1 more notebook than 2 (n+p) combinations, telling us that a notebook costs $6.50 -2(2.50) = $1.50. Then the pen is $2.50 -1.50 = $1.00.

One could solve for the costs of a notebook (n) and a pen (p) individually, then add them together to answer the question. We judge that to be more work.

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