8

Set 11: Linear Equations (Intermediate)

Explanation

Answer: B

Which value of xx satisfies x10=5\frac{x}{10} = 5?

A.

0.5

B.

50

✓ Correct
C.

2

D.

15

Detailed Explanation

Choice B is correct. Choice Ahoice D is the correct answer. The question asks which value makes the equation true, so we solve for xx. 1. Start with the equation: x10=5\frac{x}{10} = 5 2. Multiply both sides by 10: x=5×10x = 5 \times 10 3. Calculate: x=50x = 50 4. Verify: 5010=5\frac{50}{10} = 5 ✓ Quick Check: You can verify by asking: "50 divided by 10 equals what? Yes, 5!" Choice A is incorrect because this results from adding: 10+5=1510+ 5 = 15. Addition is not the inverse of division. Choice B is incorrect because this comes from dividing 10 by 5 instead of multiplying: 105=2\frac{10}{5} = 2. This is backwards. Choice D is incorrect because this results from dividing 5 by 10: 510=0.5\frac{5}{10} = 0.5. This divides in the wrong direction.

Key Steps:

The correct answer is 50

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