Question

Places A and B are 30 km apart and they are on a straight road. Hamid travel
from A to B on bike. At the same time Joseph starts from B
on bike, travels towards A. They meet each other after 20
minutes. If Joseph would have started from B at the same
time but in the opposite direction (instead of towards A)
Hamid would have caught him after 3 hours. Find the speed
of Hamid and Joseph.
JOJ Nsiza​

Answer 1

Answer:

accoding to first condition,

1/3x + 1/3y =30

x+y=90----(1)

according to second condition,

3x -3y=30

x-y=10-----(2)

from (1) and (2),

x+y=90 + x-y=10

x=50km/hr and y=40km/hr