the sum of the ages of a wood plaque and a bronze plaque is 20 years. four years ago, the bronze plaque was one half the age of the wood plaque. Find the present age of each plaque

Solución

Solución

Wood plaque^{'} s age is : 12

Bronze plaque^{'} s age is : 8

Pasos de solución

Translate the problem into an equation:

20 - x - 4 = \frac{1}{2} (x - 4)

Resolver para

x, 20 - x - 4 = \frac{1}{2} (x - 4) : x = 12

Hallar age

Wood plaque^{'} s age is : 12

Bronze plaque^{'} s age is : 8

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