In the morning, Alan drove 100 miles at the rate of 60 miles per hour; in the afternoon, he drove another 100 miles at the rate
of 40 miles per hour. What was his average rate of speed, in miles per hour, for the day?
1 answer:
300 Is the correct answer
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Answer:
1:5
Step-by-step explanation:
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I think b may not be right
Answer:
291.63 ml
Step-by-step explanation:
200/72 2.7778 half lives
(1/2)^2.77777 = .1458 or 291.63 ml
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