SOLUTION: Krystal left the airport three hours before Mary. They traveled in opposite directions. Mary traveled at 35 km/h for one hour. After this time they were 155 km apart. What was Krys

Question 1126658: Krystal left the airport three hours before Mary. They traveled in opposite directions. Mary traveled at 35 km/h for one hour. After this time they were 155 km apart. What was Krystal's speed?
Answer by ikleyn(52878) (Show Source): You can put this solution on YOUR website!
.

K traveled 4 hours at the speed of x km/h.  He (or she ?) covered 4x kilometers in 4 hours.


M covered 35 kilometers.


4x + 35 = 155


4x = 155 - 35


4x = 120  ====>  x = 120/4 = 30 km/h  is the Krystal speed.   ANSWER

-----------------------

See introductory lessons on Travel and Distance problems
    - Travel and Distance problems
    - Travel and Distance problems for two bodies moving in opposite directions
    - Travel and Distance problems for two bodies moving in the same direction (catching up)
in this site.

They are written specially for you.

You will find the solutions of many similar problems there.

Read them and learn once and for all from these lessons on how to solve simple Travel and Distance problems.

Become an expert in this area.

RELATED QUESTIONS
Rachel left the science museum one hour before Jacob. They traveled in opposite... (answered by ewatrrr,advanced_Learner)

John left the airport one hour before lisa. They traveled in opposite directions. Lisa... (answered by vleith)

Lea left the airport traveling toward the capital four hours before Danielle. Danielle... (answered by jorel1380)

Adam left the movie theater one hour before Paul. They traveled in opposite directions.... (answered by ikleyn)

Jacob left the airport traveling toward the ocean two hours before Amanda. Amanda... (answered by Seutip,ikleyn)

Sue and Carol start bicycling toward each other at the same time from homes 9 miles... (answered by stanbon)

Jaidee left the airport driving toward the desert three hours before Wilbur. Wilbur drove (answered by josmiceli)

Kali left school and traveled toward her friend's house at an average speed of 40 km/h. (answered by checkley77)

kali left school and traveled toward her friend's house at an average speed of 40 km/h.... (answered by hope723)