Barrel with liquid

Barrel with grain weight 297 kg. When it shed 48% of grain, ha weight 174 kg. What is the weight of empty barrel?

Correct result:

m =  40.8 kg

Solution:

m=297−297−17448100=40.8 kgm = 297 - \dfrac{ 297-174}{ \dfrac{ 48}{100}} = 40.8 \ \text{kg}

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