4

Set 8: Linear Equations (Advanced)

Explanation

Answer: C

How many kg of 4/kgnutsmixwith10kgof4 /kg nuts mix with 10kg of 8 /kg nuts to make $5 /kg mix?

How many kg?

A.

10

B.

40

C.

30

✓ Correct
D.

20

Detailed Explanation

Choice C is correct. 4 x + 8(10) = 5(x + 10). 4 x + 80 = 5 x + 50. 30 = x.

Key Steps:

The correct answer is 30

Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
B: Choice B is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.

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