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two people A and B enter a race in which one can run to a point and return back.person A runs at 20 mph to and from the point. person B runs to the point at 10mph and at a 30mph while going back.who came first?
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- A will come first
avg speed of A is 20
avg Speed of B is 15
so A will come first
- 12 years agoHelpfull: Yes(16) No(2)
- A will come first.
By the time , B reaches other end, A has already reached the starting point after completing race as his speed is double than B. - 12 years agoHelpfull: Yes(8) No(0)
- for A it will be = (2*20*20)/(20+20)=20
and for B it will be=(2*10*30)/(10+30)=15
so A will come first. - 12 years agoHelpfull: Yes(5) No(0)
- A comes first
- 12 years agoHelpfull: Yes(1) No(2)
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