A train passes a 135-m-long platform in 19 s and a man standing on the platform in 10 s. Find (i) the speed of the train and (b) the length of the train
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step explanation:
\begin{gathered}(5 + 3)(6 - 4) \\ = (8)(2) \\ = 8 \times 2 \\ = 16\end{gathered}
(5+3)(6−4)
=(8)(2)
=8×2
=16
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