Homework Help: math

Posted by help on Thursday, January 10, 2013 at 11:38pm.

A drivers distance varies directly as the amount of time traveled. After six hours, a driver had traveled 390 miles. How far had the driver traveled after 4 hours?

math - Steve, Thursday, January 10, 2013 at 11:41pm
4 is 2/3 of 6, so he traveled

2/3 of 390 = 260 miles
math - Reiny, Thursday, January 10, 2013 at 11:42pm
you can use a simple proportion

6/390 = 4/x
6x = 1560
x = 260

or

it looks like he is traveling at 65 mph
so in 4 hours he would go 260 miles
math - help, Thursday, January 10, 2013 at 11:46pm
Thank you guys!

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