# Long bridge

Roman walked on the bridge. When he heard the whistle, he turned and saw running Kamil at the beginning of the bridge. If he went to him, they would meet in the middle of the bridge. Roman, however, rushed and so did not want to waste time returning 150m. He continues walking, and Kamil caught up with him at the end of the bridge. How long was the bridge?

Result

x =  600 m

#### Solution:

x = a+b
a -150 = x/2
a +150 = x

a+b-x = 0
2a-x = 300
a-x = -150

a = 450
b = 150
x = 600

Calculated by our linear equations calculator.

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#### To solve this example are needed these knowledge from mathematics:

Do you want to calculate greatest common divisor two or more numbers? Do you have a system of equations and looking for calculator system of linear equations? Do you want to convert length units?

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