A boy started from his house on bicycle at 10:00 a.m. at a speed of 12 km per hour. His elder brother started after 1 hour 15 minutes on scooter along the same path and caught him at 1:30 p.m. The speed of the scooter will be(in kmph)
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Answer:
Explanation:
Total distance covered by man in(1:30pm-10:00 am)= 312hour at a speed of 12 km/hr
=12×312=42km (Total distance)
Time taken by his elder brother to catch him
=312 hour−1hour 15min
∴Brother's time = 3 hr 30 min
-1hr 15min=2hr 15min
=21560=214=94 hour
Brother's speed
=4294{speed=distancetime}
=1823 km/h
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