At what speed travel rest of way for overall average speed
The driver sets out on the 20-mile trip. When he has gone halfway he discovers he has averaged 25 mph. At what speed should he travel rest of way to make the overall average speed for trip 40 mph?
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First boat travels two miles per hour faster than second boat. Determine average speed of every boat if they are six miles apart after two hours?
As boat goes over falls, she thinks that five minutes passed as it was turned around. How fast boat moved throught water? How fast was water flowing?
Hisako ran first leg at 12 km/h and last two legs at 16 km/h. The whole race took her fifty min. How long was every leg? How long was complete course?
One train leaves Los Angeles at 15mph heading for New York. Leaves from Los Angeles at same time as train and flies back and forth between two trains until they collide, how far will bird traveled?
When he has gone halfway he discovers he has averaged 25 mph. At what speed should he travel rest of way to make the overall average speed for trip 40 mph?
During rush hour, adriana can drive thirty miles using side roads in same time that it takes to travel 15 miles on Freeway. If Adriana'a rate on side roads is 6 mi/hr faster than the rate on freeway, determine rate on side roads.
Fernando's rate on side roads is 9 mi/h faster than the rate on freeway. Write the equation to represent the problem, and then determine Fernando's rate on side roads.
Find initial value problem which models account balance S(t) gathered at any time for first 5 years? Determine solution to initial value problem.
Swimming in the river against current, she swan .25 km in same time it took Ann to swim .75 km with current. Determine speed of current and time it took ann to swim.
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