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Multiple choice

A train X starts from a place at a speed of $50$ km/hr. After one hour, another train Y starts from the same place at a speed of $70$ km/hr. After how much time will Y cross X?

  1. $3$ hrs
  2. $2\displaystyle \frac{3}{4}$ hrs
  3. $3\displaystyle \frac{1}{2}$ hrs
  4. $2\displaystyle \frac{1}{4}$ hrs
Reveal answer Fill a bubble to check yourself
C Correct answer

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