Dr. Randall, a farm veterinarian, just weighed a pig and found out that it is 128 kilograms, which is 28% more than the last time he checked. How much did the pig weigh last time?

Solution

Solution

Amount before addition : 100

Solution steps

Translate the problem into an equation:

128 = x + 0.28 x

128 = x + 0.28 x : x = 100

Amount before addition : 100

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