Question

f) Two cars, one traveling 10 km faster tha the other car, start at the same time from the same point and travel in opposit directions. In 3 hours, they are 300 kr apart. Find the speed of each car in kn hour.​

Answer 1

Answer:

20

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

Speed of the car at A =60 km/h

Speed of the car at B=40 km/h

Answer 2

Answer:

Refer the attachments :)