As shown in the figure above, a lifeguar...

As shown in the figure above, a lifeguard sees a struggling swimmer who is 40 feet from the beach. The lifeguard runs 60 feets along the edge of the water at a speed of 12 feet per second. He pauses for 1 seconds to locate the swimmer again, and then dives into the water and swims along a diagonal path to the swimmer at a speed of 5 feet per second. How many seconds go by between the time the lifeguard sees the struggling swimmer and the times he reaches the swimmer?

`16`

`22`

`50`

`56`

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