Homework Help: 8th grade math

Posted by rodney on Thursday, January 28, 2010 at 7:39pm.

Carlos and maria drove a total of 258 miles in 5 hours. Carlos drove the first part of the trip and averaged 53 miles per hr maria drove the remainder of the trip and averaged 51 miles per hr for how many hrs did maria drive

8th grade math - drwls, Friday, January 29, 2010 at 1:53am
Let X be the hours Maria drove. 5-X hours were then driven by Carlos.

53 X + 51(5-X) = 258 miles covered

53X - 51X = 2X = 258 - 255 = 3

X = 3/2 hour

Carlos did most of the driving.
8th grade math - jeremiah, Friday, April 9, 2010 at 7:54pm
x=3\2
8th grade math - Anonymous, Monday, October 15, 2012 at 11:47pm
Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting
point. If her total rowing time is 48 min, for how long does she row downstream? Express your answer to the
nearest minute.

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