Question

solve this question with steps

Answer 1

$let \: speed \: of \: sailor \: and \: stream \: bex \: and \: y\\ \frac{8}{x + y} = \frac{40}{60} \\ \frac{8}{x - y} = 1 \\ solving \: the \: above \: equations \: we \: get \\ x + y = 12 \\ x - y = 8 \\ solving \: these \\ we \: get \\ x = 10 \\ y = 2 \\ speed \: of \: sailor \: is \: 10 \: kmph \\ speed \: ofcurrent \: is \: 2 \: kmph$