Question

places A and B are 100 KM apart on a highway 1 car starts from A and another from the at the same time of different speeds is the cars travel in the same Direction they meet in 5 hours if the travel towards Each Other they meet in one hour what are the speed of the two cars

Answer 1

hii friend ,

here is your answer ,

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Let speed of car which starts from part A = x km/hr

Let speed of car which starts from part B = y km/hr

According to given conditions,

100/x-y=5(Assuming x > y)

⇒ 5x − 5y = 100

⇒ x – y = 20 … (1)

And,

100/x+y=1

⇒ x + y = 100 … (2)

Adding (1) and (2), we get

2x = 120

⇒ x = 60 km/hr

Putting value of x in (1), we get

60 – y = 20

⇒ y = 60 – 20 = 40 km/hr

Therefore, speed of car starting from point A = 60 km/hr

And, Speed of car starting from point B = 40 km/hr

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please mark as brainliest

@suthardeep

Answer 2

ANSWER

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

The difference of speeds is 60−40=20