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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=

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5 votes

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


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