# Barrel of oil

Barrel of oil weighs 283 kg. When it mold 26% oil, weighed 216 kg. What is the mass of the empty barrel?

Result

m =  25.308 kg

#### Solution:

m + o = 283
m + (1-26/100)*o = 216

m+o = 283
100m+74o = 21600

m = 32913 ≈ 25.307692
o = 335013 ≈ 257.692308

Calculated by our linear equations calculator.

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#### To solve this example are needed these knowledge from mathematics:

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