a and b are two points 150 km apart on a highway. two cars start from a and b at the same time if ther move in same direction they meet in 15 hours but if they move in the opposite direction they meet in 1 hour find their speed
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Let speed of car A be X
Let speed of car B be y
Then the distance travelled by car a in 15 hrs =15x
similarly by B it is 15y
Thus 15x-15y=150km
x - y= 10 ....=>(i)
similarly x+y=150 .....(ii)
Adding (i)and (ii) we get
2x = 160 Hence x =80
Putting x in (ii) we get
80 + y = 150 Hence y =70
Therefore speed of car A = 80 kmph
And speed of car B = 70 kmph
Let speed of car B be y
Then the distance travelled by car a in 15 hrs =15x
similarly by B it is 15y
Thus 15x-15y=150km
x - y= 10 ....=>(i)
similarly x+y=150 .....(ii)
Adding (i)and (ii) we get
2x = 160 Hence x =80
Putting x in (ii) we get
80 + y = 150 Hence y =70
Therefore speed of car A = 80 kmph
And speed of car B = 70 kmph
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