Question

Daryl used a ruler to measure the distance between two cities on a map with a scale of 1 inch to 40 miles. He reported the actual distance between the two cities as 200 miles, with a measurement error of 10 miles. What is the smallest increment on the ruler Daryl used?

A. 0.25 in.
B. 0.5 in.
C. 0.75 in.
D. 1 in.

Answer 1

Answer: Is not A. Its B.

Explanation:

I chose A and it is wrong. I would choose B.

400 * 0.5 = 200

400 * 0.25 = 100

Answer 2

Hey!

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We Know That:

1 inch = 40 miles

200 / 4 = 5

200mi. = 5 x 40mi. (5 x 1mi on scale)

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Solution:

40 / 4 = 10 (not to scale)

1 / 4 = 0.25 (error to scale)

If the scale is 0.25 then it's half way while rounding.

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Answer:

`\large\boxed{B.~0.5~in.}`

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Hope This Helped! Good Luck!