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2 years ago

Giselle works as a carpenter and as a blacksmith.

Mathematics

1 answer:

seropon [69]2 years ago

3 0

Step-by-step explanation:

$20/hr carpenter pay

$25/hr blacksmith pay

Let c = hours working carpentry

Let b = hours working as blacksmith

c + b = 30 {equation 1}

20c + 25b = 690 {equation 2}

In equation 1 solve for one variable in terms of the other.

c = 30-b

Substitute that into equation 2:

20(30-b) + 25b = 690

600 - 20b + 25b = 690

5b = 90

b = 90/5

b = 18 hours working as a blacksmith

c = 30-b = 30-18 = 12 hours as a carpenter

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Answer:

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Step-by-step explanation:

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$Balls \approx \frac{N}{2}$

$Balls \approx \frac{8}{2}$

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