Determine speed of jenny and maureen on moped and bicycle
Jenny, who rides the moped, takes two hours less to travel 60 miles than Maureen takes to travel 50 miles on the bicycle. Jenny travels ten miles per hour faster than Maureen. Determine how fast is Jenny and Maureen going in mph?
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He then returns home at same speed but takes the different route. The return trip takes one hour longer and is 25 miles. Determine the speed.
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Jenny, who rides the moped, takes two hours less to travel 60 miles than Maureen takes to travel 50 miles on the bicycle.
A man will win $ 70 if he throws either a seven or twelve in the roll of a pair of dice. He will Lose $ 20 if he does not. What is the man's mathematical expectation?
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Suppose that the mean score on a certain aptitude test across the nation is 100, and that the standard deviation is 20 points. Find the probability that the mean aptitude test score for a randomly selected group of 150 8th graders is between 99.5
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