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 20 mph, while I was approaching the intersection at 80 mph. At a certain instant in time, I was 
of a mile from the intersection, while she was 
varid="variable_id_field" variablename="impvar_4d12b457120249edbba1e7056" /> of a mile from it. How fast were we approaching each other at that instant? Round your answer to the nearest whole number.
?
A. 88 miles per hour
B. 82 miles per hour
C. 80 miles per hour
D. 78 miles per hour
E. 85 miles per hour
Answer: C
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