A swimming pool is 50 meters long . A boy can across the length and then return to his starting position in 5 minutes . What is the his swimming spend in km/h?

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Solution

Length of a swimming pool $= 50 m$
A boy crosses it and then come back
Total distance covered $= 50 \times 2 = 100 m$
Time taken $= 5 m i n u t e s$
$∴ S p e e d i n k m / h = \frac{D}{T} = \frac{100 \times 60}{1000 \times 5}$
$= 1 \frac{1}{5} k m / h = 1.2 k m / h$

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A swimming pool is 50 meters long . A boy can across the length and then return to his starting position in 5 minutes . What is the his swimming spend in km/h?

Length of a swimming pool =50 mA boy crosses it and then come backTotal distance covered =50×2=100 mTime taken =5 minutes∴Speed in km/h=DT=100×601000×5=115 km/h=1.2 km/h

Length of a swimming pool $= 50 m$
A boy crosses it and then come back
Total distance covered $= 50 \times 2 = 100 m$
Time taken $= 5 m i n u t e s$
$∴ S p e e d i n k m / h = \frac{D}{T} = \frac{100 \times 60}{1000 \times 5}$
$= 1 \frac{1}{5} k m / h = 1.2 k m / h$