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Christooopher
The answer is D. 3/8 in 1/2 hour, multiply by 2, since 1/2 times 2 is 1, meaning 1 hour. You will get 6/8, by simplifying that, you get 3/4.
nobrains
One hour is twice of 1/2 hour, so the distance the snail travels (assuming a constant speed), would be twice the distance.
[tex]2* \frac{3}{8} = \frac{6}{8} = \frac{3}{4} [/tex]