Type 1
To find speed of car using speed of sound
in air 330m/s
Kiran fires a gun 10:30 am . when Ben starts on his car towards Kiran. Kiran fires a second time at 10:41 am but Ben hears the second shot 10 mins 48 secs after the first shot. What was Ben's speed(in km/hr) if the speed of sound in air is 330m/sec ?
12 *330 = 648 * V ==> 22 km/h
(change in time)×(330)=(time between 2 bang as perceive by car)×(speed of car)
Type 2
Train and bridge.
length cross by train is bridge + train
2 train 1 bridge.
max time between two train
Type 3
when ratio of two body is given and third start after some condition.
assume the ratio as some values, reconstruct the whole scenario and assume the value that needs to be found.
do step by step conversion of each statement.
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