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Xiaogang school track and field team in the 400-meter run test, the first of 6 m / s speed finish th

My name is Thinking Purely2010-03-27 10:12:01 +0000 #1
score of 1 minutes and 5 seconds, and asked a small In the last stage just spent how much time?

Using equation answer
January's Hanyu2010-03-27 10:25:41 +0000 #2
set up to six meters per second speed run X seconds, then sprint used (65-X) seconds.

According to the formula: X = Vt

listed equation: 6X +8 (65-X) = 400

solution was X = 60

then sprint with the time = 65-60 = 5 (seconds)



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