Question 1177037: Molly and her sister Kayla leave their home at different times to travel back to their respective colleges. Molly travels at 50 mph for M hours, and Kayla travels at 60 mph for K hours. After 6 hours, they are 500 miles apart. Which system of linear equations can be used to determine the driving time of each sister?
A) M + K = 6
50M − 60K = 500
B) M − K = 6
50M − 60K = 500
C) M + K = 6
50M + 60K = 500
D) M + K = 12
50M + 60K = 1000
Answer by ikleyn(52830)   (Show Source):
You can put this solution on YOUR website! .
To be correct, the problem must say, whether they travel in one direction, or in opposite directions,
or perpendicularly, or some other way.
|
|
|
