Posted by **T. Reed** on Tuesday, April 9, 2013 at 4:55pm.

1 1/8 in. = how many miles?

- Math -
**Ms. Sue**, Tuesday, April 9, 2013 at 4:59pm
What is the map scale?

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**T. Reed**, Tuesday, April 9, 2013 at 5:01pm
1/8 in. = 10 mi.

1 1/8 in. = ? mi.

And you give the formula Ms. Sue

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**Ms. Sue**, Tuesday, April 9, 2013 at 5:09pm
One way to solve this is by using a proportion. Cross multiply and solve for x.

(1/8) / 10 = (1 1/8) / x

1/8x = 11 1/4

x = (11 1/4) / (1/8)

x = 45/4 * 8 = 90

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**T. Reed**, Tuesday, April 9, 2013 at 5:14pm
So Ms. My answer would be 90? But I'm still having a hard time understanding how you got your answer.

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**Ms. Sue**, Tuesday, April 9, 2013 at 5:18pm
Yes, the answer is 90.

Another way to approach this is to note that 1 1/8 is 9 times 1/8. So 9 * 10 = 90.

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**T. Reed**, Tuesday, April 9, 2013 at 5:21pm
Ms. Sue how did you get 9?

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**Ms. Sue**, Tuesday, April 9, 2013 at 5:22pm
1 1/8 = 9/8

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**Ms. Sue**, Tuesday, April 9, 2013 at 5:49pm
8/8 + 1/8 = 9/8

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**T. Reed**, Tuesday, April 9, 2013 at 5:56pm
Thank you Ms. Sue we love you :)))!!

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