Q. Train A is moving at a speed of 75 km\/hr and crosses a man who is running at 12 km\/hr in the same direction in 12 seconds. If Train A crosses Train B which is running at the speed of 45 km\/hr in the same direction in 48 seconds, then find the length of train B?<\/p>
A.170 meter<\/p>
B.190 meter<\/b><\/p>
C.150 meter<\/p>
D.160 meter<\/p>
E. None of these<\/p>
Sol:<\/p>
Let the length of Train A =X(in meter) <\/p>
(75-12)*5\/18=X\/12 <\/p>
63 * 5\/18 * 12=X <\/p>
X=210 <\/p>
Let, the length of Train B =Y <\/p>
(75-45)*5\/18=(210+Y)\/48 <\/p>
30 * 5\/18 * 48=(210+Y) <\/p>
210+Y=400 <\/p>
Y=190 meter<\/p> <\/p>\n","protected":false},"excerpt":{"rendered":"
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