Respuesta :

Answer:

b

Step-by-step explanation:

because 1/4 times 2 is 1/2

1/4 of yard done in 1/2 hour. Multiply 1/2 by 2 to get one full hour, so multiply 1/4 by 2. 1/4 × 2 = 2/4. Simplify 2/4 to 1/2. The answer is B.
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