SOLUTION: In 1943 the Brooklyn Bridge was 10 times as old as the Golden Gate Bridge. That same year, the difference in their ages was 54 years. Find the year of completion for each bridge.

Question 744502: In 1943 the Brooklyn Bridge was 10 times as old as the Golden Gate Bridge. That same year, the difference in their ages was 54 years. Find the year of completion for each bridge.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In 1943 the Brooklyn Bridge was 10 times as old as the Golden Gate Bridge. That same year, the difference in their ages was 54 years. Find the year of completion for each bridge.
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Equations:
b = 10g
b-g = 54
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Substitute for "b" and solve for "g":
10g - g = 54
9g = 54
g = 6 yrs (age of the Golden Gate in 1943); built in 1937
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Solve for "b":
b = 10g
b = 10*6 = 60 yrs (age of the B.B in 1943) ; built in 1883
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Cheers,
Stan H.
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