AB from both 100m Fall height, B started 10 seconds later than the A, and asked who reaches the ground first?
(1) B 1m/s faster than A
(2) A's speed is at least 3m/s
Plz show the working also
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72(3) who reaches the ground first
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DREAM GMAT
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I think its E...
Am I Correct... If yes i can explain....but if it is NOT ...than I too need a explanation...
Regards
Am I Correct... If yes i can explain....but if it is NOT ...than I too need a explanation...
Regards
MANDEEP
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nithi_mystics
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I would say C.
1) B is 1m/s faster than A.
A speed's might be 100m/s or 1m/s ==> first case, A would reach first and second case B would reach first. So not sufficient.
2) A's speed is at least 3m/s.
B's speed is not given. So insufficient.
Taking both together, we can say A always reaches first.
For eg - A's speed = 3. then B's speed = 4
A reaches in 33.3 sec and B reaches in 35 secs (25+10)
Whenever n is greater than 2,
100/n < ((100/(n+1))+10)
Hope I am clear.
1) B is 1m/s faster than A.
A speed's might be 100m/s or 1m/s ==> first case, A would reach first and second case B would reach first. So not sufficient.
2) A's speed is at least 3m/s.
B's speed is not given. So insufficient.
Taking both together, we can say A always reaches first.
For eg - A's speed = 3. then B's speed = 4
A reaches in 33.3 sec and B reaches in 35 secs (25+10)
Whenever n is greater than 2,
100/n < ((100/(n+1))+10)
Hope I am clear.
Thanks
Nithi
Nithi
