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rosijanka [135]
3 years ago
12

Tracie and Marcia drove to Northern California to see Marcia’s sister in Eureka. Tracie drove one hour more than four times as m

uch as Marcia. The trip took a total of 21 driving hours. How many hours did Tracie drive?
Mathematics
1 answer:
Murrr4er [49]3 years ago
5 0
Answer: 17 hours

If you would like further explanation let me know. :)
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AnnyKZ [126]
Divide 6 by 3
3 goes into 6, 2 times so one apple costs $2
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3 years ago
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Suppose 15% of x equals 20% of y. What percentage of x is y ?
WINSTONCH [101]

Answer:

x = 133\frac{1}{3} of y

Step-by-step explanation:

Given:

15% of x equals 20% of y

So,

0.15x = 0.20y

so

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What’s the answer to this problem?
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×=23

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5. There are two kinds of products (called DA and GA) produced in your company every day. Alsothere are two kinds of materials (
chubhunter [2.5K]

Answer:

  • a) $56000
  • b) DA = 2, GA = 10

Step-by-step explanation:

<u>Given</u>

  • DA = A + B ⇒ $3000
  • GA = A + 2B ⇒ $5000
  • Number of A = 12
  • Number of B = 22

<u>We can see from the equations that</u>

  • GA - DA = B ⇒ $2000 and
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<u>So greater use of unit B brings greater profit. We don't want any unit is left over, so get this equation.</u>

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  • A + 2B = 22

Is the equation set to indicate use of the units A and B

<u>Solving we get </u>

  • A = 2 and
  • B = 10

<u>It this case all the units are used and profit is maximum</u>

  • 2*$3000 + 10*$5000 = $56000
  • Number of DA = 2
  • Number of GA = 10
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In a wildlife park, there were 18 gray wolves. After three years, there were 27 gray wolves. What is the percent gain?
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Answer:

50 percent gain

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