Question

Points a and b are 100 km apart from highway if car travels in same directions with constant speed they meet in 1 hour. Find speed of cars.​

Answer 1

Answer:

Speed of the cars are 60 km/hr and 40 km/hr.

Step-by-step explanation

Let the speed of car at A be x kmph

and the speed of car at B be y kmph

when the car travel in same direction Relative Speed is x−y

Dist=100km

t=5 hours

∴  Dist =S×T

100=(x−y)5

x−y=20⟶(I)

when car travel in opp direction Relative Speed is x+y

Dist=100km

t=1 hours

Dist=ST

100=(x+y)1

x+y=100⟶(II)

Solving (I) & (II)

x−y=20

x+y=100

   2x=120

x=60km/h

y=40km/h