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harina [27]
3 years ago
8

You bought a magazine for $5 and four erasers. You spend a total of $25. How much did each eraser cost?

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
7 0

Answer:

$5

Step-by-step explanation:

Magazine cost: 5$ each

Eraser cost: X$ each

Total cost is the number of items (1 magazine) times the cost of each item (5$). We don't know the cost of each eraser, so we represent that using a variable, X.

 

  • 1(5) + 4(X) = 25

 

  • 5 + 4X = 25

 

  • subtract 5 from both sides

 

  • 4X = 25 - 5

 

  • 4X = 20

 

  • divide both sides by 4

 

  • X = 20/4

 

  • X = 5

  • Each eraser cost 5$

Hope this helps :)

Lesechka [4]3 years ago
5 0

Subtract magazine from total:

25 -5 = 20

Divide by number of erasers:

20/4 = 5

Each eraser cost $5

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Answer:

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Step-by-step explanation:

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Irrational number on the other hand can't be expressed as a fraction and do not terminate. Also, there is no pattern in numbers i.e. there is no repetition in numbers after the decimal point.

For example: 3.44444..... can be expressed as rational number 3.45.

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