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.
The aircraft travels upwind with the speed of 420 mph for 7 hours. In how much time will it cover same distance in absence of wind? Wind speed is given as 120 mph.
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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?
The small plane flying into wind takes 3 hours 20 minutes to complete flight of 960 km, flying with wind, same plane takes 2 hours and 30 minutes to make same trip. Determine speed of plane and speed of the wind?
If they cycle in same direction, James will pass George in seven hours. Determine average rate if speed, in miles per hour, of both cyclists.
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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