Question

Keith swam 4 kilometers against the current in the same amount of time it took him to swim 12 kilometers with the current. The rate of the current was 2 kilometers per hour. How fast would Keith swim if there were no current?Rate he swam with no current=

Answer 1

Let the rate he swam with no current be

$=x$

The rate against the current will be

$=(x-2)km\text{ /hr}$

The rate with the current will be

$=(x+2)$

Given that the rate of the current is

$2\operatorname{km}\text{ /hr}$

The distance swam against the current is

$=4\operatorname{km}$

The distance swam with the current is

$undefined$