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Illusion [34]
3 years ago
15

Hannah is at the supermarket to buy carrots and potatoes. If she buys 2 pounds of carrots and 3 pounds of potatoes, it will cost

her a total of $8, and if she buys 4 pounds of carrots and 4 pounds of potatoes, it Hill cost her a total of $13. Which of these statements is correct? Carrots cost $1.50 a pound, which is less than potatoes cost. Carrots cost $1.50 a pound, which is more than potatoes cost. Carrots cost $1.75 a pound, which is less than potatoes cost. Carrots cost $ 1.75 a pound, which is more than potatoes cost
Mathematics
1 answer:
zhenek [66]3 years ago
8 0

Answer:

Carrots cost $ 1.75 a pound which is more than potatoes cost.

Step-by-step explanation:

Let,

Carrots cost $ x per pound and potatoes cost $ y per pound.

Buying 2 pounds of carrots  and 3 pounds of potatoes will cost her

$ (2\times x + 3\times y)

and

Buying 4 pounds of carrots and 4 pounds of potatoes will cost her

$ (4\times x + 4\times y)

According to the question,

(2\times x + 3\times y) = 8-----(1)

(4\times x + 4\times y) = 13-----(2)

multiplying (1) by 2 we get,

(4\times x + 6\times y) = 16-----(3)

Deducting (2) from (3) we get,

2\times y = 3

⇒ y = \frac{3}{2} = 1.5------------------(4)

Putting value of y in (1) we get,

(2\times x = 8 - 3\times 1.5) = 3.5

⇒  x =\frac{3.5}{2} = 1.75 ------------(5)

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Surface Area of Cylinders - Item 1175
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The surface area is 47.1 sq in.

Step-by-step explanation:

Given,

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Solve by using any method of substitution<br><br>4 +8x = y <br>6x - y = 2
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Answer:

(-3,-20)

Step-by-step explanation:

4 +8x = y ...... equation (1)

6x - y = 2 ........equation(2)

from equation 2

6x - y = 2

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