2
algebra

A map scale is 1 inch = 50 miles. If two cities are 4.5 inches apart, how many miles is that?

A

225

B

150

C

200

D

250

Correct Answer: A

Choice Bhoice C is the correct answer.

  1. Proportion: 150=4.5x\frac{1}{50} = \frac{4.5}{x}
  2. Cross Multiply: x=50(4.5)x = 50(4.5)
  3. Calculate: x=225x = 225

Choice Bhoice D is incorrect because calculation error.

Choice Bhoice C is incorrect because calculation error.

Choice Bhoice D is incorrect because calculation error.