A Boy Wishes to Cross a River in the Shortest $\theta$

question 53

Multiple Choice

A boy wishes to cross a river in the shortest possible time, without necessarily landing directly across from his starting point.He can row at 2 m/s in still water and the river is flowing at 1 m/s.At what angle $\theta$ should he point the bow (front) of his boat?

• A)30 \(\degree\)
• B)45 \(\degree\)
• C)60 \(\degree\)
• D)63 \(\degree\)
• E)90 \(\degree\)

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Definitions:

Variable Overhead Rate

This rate reflects the cost of variable overhead allocated to each unit of production, based on an activity such as direct labor hours.

Direct Labor-Hours

The total hours worked by employees directly involved in the manufacturing process or providing a service.

Fixed Manufacturing Overhead

Costs that do not change with the level of manufacturing output, including salaries of managers and depreciation of factory equipment.

Direct Labor-Hours

The total hours of labor directly involved in producing goods or providing services.