Homework Help: College Math

Posted by Toney on Sunday, February 19, 2012 at 9:05pm.

Natasha drove from Bedingsfield to Portsmouth at an average speed of 100 km/h to attend a job interview. On the way back she decided to slow down to enjoy the scenery, so she drove at just 75 km.h, Her trip involved a total of 3.5 hours of driving time. What is the distance between Bedingsfield and Portsmouth?

College Math - MathMate, Sunday, February 19, 2012 at 10:40pm
Let D=distance (one-way)
then
D/100+D/75=3.5
Solve for D.

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