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3 years ago

I need help with these question! Please explain step by step-

Mathematics

1 answer:

eduard3 years ago

5 0

Answer:

3 bags of chocolate chips and 3 bags of walnuts

Step-by-step explanation:

1 pound = 16 ounces (oz). So, our dear Jemina needs 48 ounces. Then, we do system of equations. one of the equations are 3x +2y = 15(dollars), and then second is 12x + 4y = 48. (ounces/pound). Let's solve for x first. We multiply the dollars equation by 2 to eliminate y from both equations. 6x +4y = 30. When you subtract, you get 6x = 18. So, x = 3, Jemina buys 3 chocolate chips bags. So, thats $9. So, she also spends $6 on walnuts. For checking, 3 bags of chocolate chips = 36 ounces. 3 bags of walnuts = 12 ounces. 36+12 ounces = 48 ounces. :D

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Answer: Time taken by pipe C to empty the tank = 5 hours.

Step-by-step explanation:

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Let time taken by Pipe C = x ( hours)

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Now, with all 3 pipes open, it takes 3 hours to fill the tank, it can be represented as

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So, x=5

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3 years ago

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