45 കി.മീ/മണിക്കൂർ വേഗതയിൽ ഓടുന്ന ഒരു ട്രെയിൻ 9 കി.മീ/മണിക്കൂർ വേഗതയിൽ അതേ ദിശയിൽ ഓടുന്ന ഒരാളെ 20 സെക്കൻഡിൽ മറികടക്കുന്നു. അങ്ങനെയെങ്കിൽ ട്രെയിനിന്റെ നീളം കണ്ടെത്തുക.
A150 മീറ്റർ
B350 മീറ്റർ
C200 മീറ്റർ
D250 മീറ്റർ
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