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  1. A boy runs 20 km in 2.5 hours. How long will he take to run 32 km at double the previous speed ?
    1. 2 hours
    2. 2
      1
      		 hours
      2
    3. 4
      1
      		 hours
      2
    4. 5 hours
Correct Option: A

The boy covers 20 km in 2.5 hours.

⇒ Speed =
20
 = 8 km/hr.
2.5

New speed = 16 km/hr
∴ Time =
32
 = 2 hours.
16


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