During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip? O 27 m/s O 21 m/s O 23 m/s O 25 m/s O 29 m/s
During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip? O 27 m/s O 21 m/s O 23 m/s O 25 m/s O 29 m/s
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O 27 m/s
During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during
the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip?
O 21 m/s
O 23 m/s
O 25 m/s
<
O 29 m/s
>
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