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Question
A motorboat can go 14 miles downstream on a river in 20 minutes. It takes 30 minutes for this boat to go back upstream the same 14 miles. Find the speed of the boat.
14 = (1/2)(x - w)
14 = (1/3)(x + w)
14 = (1/2)(x - w)
28 = x - w
x = w + 28
(1/3)(w + 28 + w) = 14
2w + 28 = 42
2w = 14
w = 7
x = 7 + 28 = 35
The motorboat is traveling at 35mph
info found at http://purplemath.com/modules/distance2.htm
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Advanced Math
Answers by Expert:
Sherman D.
Expertise
I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.
Experience
Mathematics, Recipes, History, and Games.
Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.
Awards and Honors
Principle's list and A and B honor roll in high school only.
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