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Please place A and B are 100 KM apart on the highway one car starts from A a and other from B at the same time if the car travels towards each other they meet in 1 hour what are the speed of the two cars

Posted by ★Samyak Jain★ 4 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Akshay Pratap Singh 4 years, 2 months ago

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

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