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MAVERICK [17]
3 years ago
6

PLEASE HELP A store is having a sale on chocolate chips and walnuts. For 5 pounds of chocolate chips and 3 pounds of walnuts, th

e total cost is $21. For 2 pounds of
chocolate chips and 6 pounds of walnuts, the total cost is $24. Find the cost for each pound of chocolate chips and each pound of walnuts.
Mathematics
1 answer:
Stells [14]3 years ago
3 0

Answer:

Chocolate Chips cost $2.25 and Walnuts cost $3.25 per pound each

Step-by-step explanatChocion:

Let x = cost of pounds of chocolate chip cookies and y = cost of pounds of walnuts.

From the question, we get 5x+3y = 21 and 2x+6y = 24. To solve the equation, we use substitution. From the first equation, we get y = (21-5x)/3. We substitute the y into the second equation to get 2x + 6(21-5x)/3 = 24. This turns out to be 2x+(42-10x) = 24. Adding like terms you should get 42-8x = 24. Solving for x, x = $2.25 per pound. Plugging this into the first equation, we get 5(2.25)+3y = 21. Solving for y, we get $3.25 per pound of walnuts. If we plug in the numbers into the 2 equations, we will get the right total.

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5 0
2 years ago
What would happen to the width of the confidence interval if Gina changed it to a 99% confidence interval?
luda_lava [24]

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6 0
3 years ago
The mean of (x + 5), (x + 3), (2x + 1) and (x - 6) is 12. What is the<br> value of x?
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7 0
2 years ago
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alexira [117]

Answer:

100

Step-by-step explanation:

Step 1:

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5 0
3 years ago
Read 2 more answers
If the product of some number and three is increased by 24 the result is five times the number find the number
rodikova [14]

Answer:

The Answer is: 12.

Step-by-step explanation:

Let n = number.

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3n + 24 = 5n

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Proof:

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Hope this helps! Have an Awesome Day!! :-)

6 0
2 years ago
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