A Lakefront Runs East-West

question 61

Short Answer

A lakefront runs east-west. A man in a rowboat is 5 miles due north of point A on the shore. He wishes to get to B, 5 miles due east of A, in the least time. He is able to row 3 miles per hour and walk 5 miles per hour. What is the minimum time, in minutes?

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Definitions:

Tomography

Imaging by sections or sectioning, using any kind of penetrating wave, to create a three-dimensional image of the inside of an object.

Myelogram

A radiographic examination of the spinal canal and nerve roots by injecting contrast dye to detect abnormalities or injuries.

Sialography

A diagnostic imaging technique that uses a radiopaque dye to visualize and evaluate the salivary glands and ducts.

Intravenous Pyelogram

A radiographic procedure used to visualize the kidneys, ureters, and urinary bladder using a contrast medium injected intravenously.