Question 266778
This is an RTD problem. Here is a table based on the given information
swimmer . . . . . . rate . . . . . . time . . . . . . .distance
mark . . . . . . . . . .5.8+3.7 . . . .t . . . . . . . . (2.2)
since he is going down stream or with the current, we add to get
{{{(5.8+3.7)t = 2.2}}}
combine like terms to get
{{{9.5t = 2.2}}}
divide to get
{{{t = .23}}} hours