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IgorC [24]
2 years ago
14

Ms. Cathy bought a package of pencils. Out of every 10 pencils, 8 are black. If there are 30 pencils in the pack, what fraction

of the pencing in the pack are black?
What percent of the pencils in the pack are black?
What fraction of the pencils in the pack is black?
Mathematics
1 answer:
balu736 [363]2 years ago
5 0

Answer:

Fraction: 24/30 Percentage: 80%

Step-by-step explanation:

It might want a simplified version of the fraction, so the answer for that one could be 4/5. I hope this helps :)

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1A. Nayeli wants to earn some extra money so she sells lemonade for $2 per cup and orange juice for $3 per cup. She sells a tota
Fantom [35]

Answer:

1. 2x + 3y = 240 AND x + y = 100

Nayeli sold 60 cups of lemonade and 40 cups of orange juice.

Step-by-step explanation:

Let

Number of cups of lemonade sold = x

Number of cups of orange juice sold = y

The system of equation could be represented by:

2x + 3y = 240 (1)

x + y = 100 (2)

from (2)

x = 100 - y

Substitute into (1)

2x + 3y = 240 (1)

2(100 - y) + 3y = 240

200 - 2y + 3y = 240

- 2y + 3y = 240 - 200

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x + y = 100 (2)

x + 40 = 100

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Nayeli sold 60 cups of lemonade and 40 cups of orange juice.

(x, y) = (60, 40)

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