সব প্রশ্নে ফিরে যান
Math
A boatman takes twice as long to go a distance upstream as to travel the same distance downstream . What is the ratio of the speed of the boatman (in still water) and the current?
A) 2:03
B) 3:01
সঠিক উত্তর
C) 1:03
D) 4:03