Problems-solving in Equations The distance between the two cities A and B is 300 km, set off a car from the city a toward the city b by speed 90 km/h and set off from the city b bicycle toward a by speed of 10km/h.  if you knew that the car and the bike were based in nine in the morning. Select the time that the car and the bike are going to met ?      
Equation for the 8th grade ! 
Please help i need to get a formulation of this equation 

To find the answer you are looking for in a more visual way, consider this diagram.

After 1 hour, the car (red line) traveled 90km from city A, and the bike (green line) traveled 10km from city B. Now, draw another red line that is 90 km long, right after the red one. It will go from 90km to 180km. Then, draw another green line that is 10km long, right after the green one. It will go from 290km to 280km. Having two lines will tell you how far they traveled after 2 hours. Keep this up until the red and green lines meet. 
