My Aunt and I Were Approaching the Same Intersection, She

question 69

Multiple Choice

My aunt and I were approaching the same intersection, she from the south and I from the west. She was travelling at a steady speed of mph, while I was approaching the intersection at mph. At a certain instant in time, I was of a mile from the intersection, while she was of a mile from it. How fast were we approaching each other at that instant?

• A) miles per hour
• B) miles per hour
• C) miles per hour
• D) miles per hour
• E) miles per hour

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Definitions:

Nitrogen Cycle

A biochemical cycle that involves the conversion of nitrogen into multiple chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems.

Nitrification

A microbial process in the nitrogen cycle where ammonia is converted into nitrite and then into nitrate.

Atmosphere

The layer of gases surrounding a planet, essential for life on Earth, providing air to breathe and protecting from harmful solar radiation.

Assimilation

The process by which individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society.