Strong-strong 400-meter circular track 150 meters per minute, Liang-liang is running 200 meters, if

865.30429 million2010-01-30 13:02:06 +0000 #1

sky cloud2010-01-30 13:15:17 +0000 #2

Solution: Let x minutes to meet one.

Then the strong-strong at this time ran 150x rice, Liang-liang ran 200x meters,

Liang-liang more than the strong-strong 400-meter run,

200x-150x = 400,

x = 8.

A: meet once every 8 minutes.