About Chanda Walker Expertise I can answer word problems involving mathematics at the high school and college level. I particularly enjoy calculus word problems. Please don't just type the math problem without comments. If you don't tell me what problem your having, I can't help.
Experience Have done word problems as a tutor and as a student of mathematics and physics for years.
Organizations Sigma Xi
Education/Credentials Optical Science PhD
Past/Present Clients I've answered hundreds of questions here at AllExperts.com in algebra, physics and general math sections.
A single-engine plane started out in high tail winds and made a trip of 500 km in 2 hours. On the return trip, the pilot was forced to land after 45 minutes, having only traveled only 75 km. What was the rate of the plane in still air? What was the rate of the wind?
Answer (v+w) = 500/2 = 250 km/h
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I'll assume the wind hasn't abated on the return trip though it isn't stated clearly in the problem.
t = .75h
d = 75km
(v-w) = 75/.75 = 100 km/h
v -w + v + w = 250 + 100
2v = 350
v = 175 km/h
w = 75 km/h
That is some heavy wind! What was that pilot thinking? That is tropical storm force winds. I'd call the FAA. :)
