If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.
RE: If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.
formula for crossing time (x+y)/(u+v) x 100 y 120 u 75/7.5 10m/s v (120*7.5)/100 8.33m/s therefore time 12sec
RE: If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.
RE: If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.
First answer is correct.. 175m in 7.5 secs 220m-- ? secs 9.42Seconds
RE: If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.
Frankly no answer is possible. Because the data given is incomplete. It does not mention what speed the other train is coming.
Unless and until that data is received we cannot go ahead with solving.
