Solving junior high school mathematics with unary linear equation - Training Enrollment Network

Solving junior high school mathematics with unary linear equation

Solution: Let the speed of A be x m/s, then the speed of B is [(400/40)-x] m/s.

3 minutes and 20 seconds =200 seconds

200x=200[(400/40)-x]+400

x= 10-x+2

2x= 12

x=6

400/40-x=4

A: The speed of A is 6m/s, and the speed of B is 4m/s..

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