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Formation of Algebraic Expressions

A train trave...

Question

A train traveling at the speed of $80$ kmph leaves Ambala at $10.30$ a.m. and another train traveling at the speed of $95$ kmph at $1.30$ p.m. leaves Ambala, travelling in the same direction. After how many km from Ambala will they be together?

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Solution

Distance traveled by $1 s t$ train in $3$ hrs. $= 80 \times 3 = 240$ km.
They are in same direction.
Thus, Relative speed $= 95 - 80 = 15$ km/hr.
Time taken to meet $= 240 \times 15 = 16$ hrs.
Distance from Ambala when they'll meet $= 16 \times 95 = 1520$ km

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