1.

A boy stated from his house on bicycle at 10 am at a speed of 12 km per hour. His elder brother started after 1 hr 15 min on scooter along the same path and caughthim at 1.30 pm. The speed of the scooter will be (in km/hr) ?

A. .5 km/hr
B. 6 km/hr
C. $18\frac{2}{3}$$ km/hr
D. km/hr
Answer» D. km/hr


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