Rinku riding his car covers 136 metres in 17 seconds. What is his speed (in km/hr)?
28.8
To calculate Rinku's speed, we need to convert the given distance and time into the desired units (km/hr).
1. Convert meters to kilometers:
136 meters = \( \frac{136}{1000} \) kilometers = 0.136 kilometers
2. Convert seconds to hours:
17 seconds = \( \frac{17}{3600} \) hours (since there are 60 seconds in a minute and 60 minutes in an hour)
3. Calculate the speed:
Speed = \( \frac{\text{Distance}}{\text{Time}} \)
Speed = \( \frac{0.136 \text{ km}}{\frac{17}{3600} \text{ hr}} \)
Speed = \( 0.136 \times \frac{3600}{17} \text{ km/hr} \)
Speed = \( 8 \times \frac{3600}{1000 \times 17} \text{ km/hr} \) = 28.8 km/hr
Therefore, Rinku's speed is 28.8 km/hr.
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