A world-record swimmer and a dolphin compete in a 400-meter race. The swimmer swims at a rate of 2 meters per second, and the dolphin swims at a rate of 8 meters per second. When the dolphin crosses the finish line, how many meters is the swimmer from the finish line?

Question

Mathematics

Asa Pennington

22 September, 23:55

A world-record swimmer and a dolphin compete in a 400-meter race. The swimmer swims at a rate of 2 meters per second, and the dolphin swims at a rate of 8 meters per second. When the dolphin crosses the finish line, how many meters is the swimmer from the finish line?

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Answers (1)

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Carter Bright · Answer 1

300 meters away

Step-by-step explanation:

it will take the dolphin 50 seconds to finish the race (400/8)

it will take the man 200 seconds to finish the race (400/2)

by the time the dolphin crosses the finish line it will take the swimmer 150 seconds to reach the finish line (200 - 50 seconds)

recall the swimmer swims at 2 meters per second and has 150seconds to reach the finish line hence he is 300 meters away (150 x 2)