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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?
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?
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?
On the 5 hr trip thomas drove part of time at 30mph and rest 55 mph. If he traveled the distance of 250 miles, how much time he spent driving at 55mph
Kelley's boat goes 12mph. Determine rate of cureent of river if she can go 6mi upstream in same amount of time she can go 10mi downstream.
The cargo plane flew to maintenance facility and back it took 1 hour less time to get there than it did to get back.
Second rider's horse travels at 18 miles per hour. At what time will second Pony Express rider catch up to first Pony Express rider.
Flying with wind the plane flew 1800 mi. in 3 hours. Against wind, plane needed 5 hours to fly same distance. Determine rate of plane in calm air.
The cyclist travels 20 miles in same amount of time as it takes the hiker to walk 6 miles. Rate of cyclist is 7 mph faster than rate of hiker. Determine rate of cyclist and rate of hiker.
If width were increased by 3 m while length remained same, new rectangle would have the area of 30 m square. Determine length and width of original rectangle.
Write the function that provides length of fencing needed if length of side parellel to barn is x. Determine dimensions of garden using minimum amount of fence.
Ellen rode at the speed of 12 mph and Kate rode at the speed of 9 mph. Ellen got to library 15 minutes before Kate. How long it took Ellen to get to library and what time Ellen got to the library.
If blending plant is available for three hours and refining plant is available for two hours, how many tons of each kind of fuel must be manufactured so that plants are completely used?
Average speed on way to airport was 100mph, and average speed returning was 150mph. Determine distance between two airports if total flying time was 5 h.
Working alone, loader A would take two days longer than loader B working alone to remove all dirt. How long for A to do job entirely by itself?
Find how long it will take rocket to reach ground. Determine interval on which height of rocket is greater than 240 ft.
If she averaged six miles per hour riding and three miles per hour walking, how far is it from the home to bicylce shop if total travel was one hour?
In today's world with private companies specializing in delivery of packages (FedEx, UPS, etc.) does government still require to be involved in delivery of mail?
To make the direct hit dad requires to know how fast distance between dog and himself is varying when dog is precisely 900ft from him. Use calculus to find out.
If the red ball is drawn, player wins 3$, if the green ball is drawn, player wins 4$, and if the white ball is drawn player wins nothing. What must carnival operator set bet at if on average he make
Find percent finer than each sieve and plot the grain-size distribution curve. By looking at grain-size distribution curve, do you believe soil is well-graded or not?
By using Gauss-Seidel method, find how much of each of unpopular paints must be added to form one gallone of popular color.
You are working in the foreign country, and to finish the job on time, you require FedEx delivery to arrive, and you require internet to work. Determine probability that you can't finish the job?
Sphere is divided into eight wedges (similar to the section of the orange), Determine surface area and volume of one wedge?
Illustrate that requirement of constant angles yields the trajectory that is in form of the logarithmic spiral, r=a*e^(b*theta), where r is radial distance to prey and theta is azimuthal angle.