Set 17: Linear Equations

Explanation

Answer: D

Typist A types 50 wpm. Typist B types 60 wpm. They have a 1100 word document. If they split it, how long does it take?

✓ Correct

Detailed Explanation

Choice D is correct. Choice Ahoice D is the correct answer. 1. Combined Rate: $50+ 60 = 110$ wpm. 2. Equation: $110t = 1100$ 3. Divide by 110: $t = 10$ Choice Ahoice C is incorrect because it results from an error in the solution process. Choice Ahoice D is incorrect because it results from an error in the solution process. Choice Ahoice B is incorrect because it results from an error in the solution process.

Key Steps:

•

The correct answer is 10

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.

C: Choice C is incorrect and may result from a calculation error.

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