# Please. Could someone solve this math problem from Saxon 7/6 3rd ed.

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We are not math minded individuals. You know how sometimes you look at a problem and it just doesn't register? Maybe you don't:D. Unfortunately, it happens often around here.;) So if you all could be kind enough to help with this one, we'd greatly appreciate it!

It is on page 650 of the 3rd ed. 7/6 Saxon book, #23.

On a 20-question multiple choice test with four choices for each question, how many questions are likely to be answered correctly simply by guessing each answer?

Thanks again!

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If there are 4 choices, you have a 1 in 4 chance of guessing correctly. Therefore, 1/4 of 20 questions is 5.

Another way of looking at this is if there are 4 questions, you have a 1 in 4 chance of guessing correctly. This means that 25% of the time you would be likely to guess correctly. 25% of 20 questions is 5.

HTH.

Erika

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Thank you so much! I have another question, though. Our book shows that this should be set up in a ratio box per lesson 113. Can you show us how this would be done? I hope this question isn't "clear as mud".

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A ration box would simply be...

1/4 x 20/1

or 1 in 4 chance out of 20 problems

so:

1/4 x 20/1 = 5

HTH.

Erika

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Thanks for your help with this. I guess the problem didn't really line up with the way it was taught in lesson 113 so I didn't want to set it up like that. I think that is the only way, though. Thanks again. I gave you some good rep!:)

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