A man weighing 80 kg is standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 m on the boat towards the shore and then halts.The boat weight 200 kg. How far is he from the shore at the end of this time ?

Options

A. `11.2m`
B. `13.8m`
C. `14.3m`
D. `15.4m`

Answer

C

Explanation

Let the distance moved by boat be `x`
`80{-8(8-x)}+200(+x)=0`
`rArrx=(16)/(7)=2.3`
distance of person from shore `=20-(8-203)=14.3m]`