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Please explain to me how to answer this question

Please explain to me how to answer this question-example-1
User Jamison
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She is wrong. The way we know this is by this. If you are going 70 mph for 30 miles than you have to spilt the mph sign in half so 35 miles in 30 minutes.The you subtract 4 from each getting 31 miles in 26 minuets. Therefore Lethna is wrong.
User RWill
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