Cole just measured his dog and found out that it weighs 17 kilograms, which is 70% more than the last time Cole measured. How much did the dog weigh last time?

Solution

Solution

Amount before addition : 10

Solution steps

Translate the problem into an equation:

17 = x + 0.7 x

17 = x + 0.7 x : x = 10

Amount before addition : 10

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