Virtuoso

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 Aug6 awarded Famous Question Jul20 asked GMAT: Area of a triangle Jul2 awarded Curious Jun9 awarded Notable Question Oct29 awarded Notable Question Oct15 awarded Notable Question Sep24 awarded Popular Question Sep21 awarded Notable Question Jun6 awarded Popular Question Apr17 awarded Notable Question Apr3 awarded Popular Question Mar5 awarded Yearling Feb5 awarded Popular Question Jan24 awarded Popular Question Nov22 awarded Popular Question Nov3 awarded Notable Question Mar28 awarded Popular Question Mar5 awarded Yearling Sep18 comment Velocity at which the second locomotive will catch the first without passing it? I set s1 and s2 equal to each other, I get 1.4t^2=v(t-10). Then I get v = 1.4t^2/(t-10). Plugging that back into s2 you get the same answer as s1. What am I doing wrong? Sep16 comment Velocity at which the second locomotive will catch the first without passing it? can you please explain how you got (t-10) ? shouldn't it be t+10, since train number 2 is starting 10 seconds later?