SOLUTION: Rachel left the science museum one hour before Jacob. They traveled in opposite directions. Jacob traveled at 80 km/h for three hours. After this time they were 480 km apart. What

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Rachel left the science museum one hour before Jacob. They traveled in opposite directions. Jacob traveled at 80 km/h for three hours. After this time they were 480 km apart. What       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1047812: Rachel left the science museum one hour before Jacob. They traveled in opposite directions. Jacob traveled at 80 km/h for three hours. After this time they were 480 km apart. What was Rachel's speed?
Found 2 solutions by ewatrrr, advanced_Learner:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Rachel left the science museum one hour before Jacob.
Jacob traveled at 80 km/h for three hours
in opposite directions: Add their Distances
D = rt
r is Rachel's speed
r(4hr) + 80km/h(3hr) = 480km
r = 240/4 = 60km/hr, Rachel's speed
CHECKING:
240km + 240 km = 480km CHECKS

Answer by advanced_Learner(501) About Me  (Show Source):