Question 501744
A barrel of honey weighs 100 pounds. The same barrel with kerosene in it weighs 70 pounds. If honey is three time as heavy as kerosene, how much does the empty barrel weight?
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b + 3k = 100
b + k = 70
------------ Subtract
2k = 30
k = 15 pounds of kerosene
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b = 70 - 15
b = 55 pounds