Determine speed of current and time it took to swim
Ann regularly swam .4 km in 20 min at school pool. 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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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.
You drive after the friend maintaining the speed of 70mph. If neither of you modify the speed, how many miles will travel before overtake him?
The boat goes upstream 30 miles and downstream 44 miles in ten hours. Next day it goes upstream 40 miles and downstream 55 miles in 13 hours. Find average speed of boat and stream?
In economics, of all new products put upon market, 90% fail and are taken off the market in three years. Using normal approximation for this binomial distribution without correction for continuity; if a store introduces 70 new products, what is th
The car is driven 50,000 miles. Its five tires (one is the spare)are rotated regularly and often. How many miles will any one tire have travelled on road by end of trip?
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