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A mountain on a tropical island experiences changes in its height due to volcanic activity. Its current height is 5,181 meters, which is 10% taller than it was when the mountain was last measured. How tall was it then?

Solution

A mountain on a tropical island experiences changes in its height due to volcanic activity. Its current height is 5, 181 meters, which is 10% taller than it was when the mountain was last measured. How tall was it then?

Solution

Amount before addition : 4710

Solution steps

Translate the problem into an equation:

5181 = x + 0.1 x

5181 = x + 0.1 x : x = 4710

Amount before addition : 4710

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