Question

a train is moving ataa uniform speed of 36 km/hr. how far it will travel in 20 min. also find he time required to cover a distance of 216 km.

Answer 1

$$\begin{gathered} \mathrm{Speed}\mathrm{of}\mathrm{train}=36\mathrm{km}/\mathrm{hr}=\frac{36\times 1000}{3600}\mathrm{m}/\mathrm{s}=10\mathrm{m}/\mathrm{s} \\ \mathrm{Time}=20\min =20\times 60\sec =1200\sec \\ \mathrm{Now},\mathrm{distance}\mathrm{travelled}\mathrm{in}20\min =\mathrm{speed}\times \mathrm{time}=10\times 1200=12000\mathrm{m}=12\mathrm{km} \\ \mathrm{Time}\mathrm{taken}\mathrm{to}\mathrm{travel}216\mathrm{km}=\frac{\mathrm{distance}}{\mathrm{speed}}=\frac{216}{36}=6\mathrm{hours} \end{gathered}$$