Algebra math problem

Question

An iceberg and a ship separated by 240 kilometers are moving directly towards each other. The iceberg is floating at 4 kilometers per hour, whereas the ship is traveling at 20 kilometers per hour. Assuming that neither changes course, how long will it be before the two collide?

Answer 1

t = time                 d = r · t 

4t + 20t = 240

24t = 240

t = 10

 

The meet in 10 hours