Two trains whose speed are in ratio 4:3 cross each other in 18 seconds. Train A crosses a pole in 24 seconds. How much time will it it take train B to cross the pole?
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Answer:
3 seconds
Step-by-step explanation:
Length of Ist train =3x*3=9x
Length of IInd train =4x*3=12x
Total distance =21x
Speed =4x+3x=7x
∴ time=
21x / 7x =3 sec
hope it helps :)
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