a lifeguard wishes to get to a person locared 100ft downstream on the opposite side of 50ft wide river. the lifeguard plans to get a person by a combination of swimming across the river to point x ft downriver on the opposite bank and running of the way along the river. The life guard can swim at the rate of 5ft/sec and ca run at a rate of 15ft/sec.to what point on the opposite bank should the lifeguard swim to get the person in the least amount of time
Mathbot Says...
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