SOLUTION: A man spends 70% of his salary on food expenses, 40% of the rest on traveling expenses, 90% of the rest on house rent and was finally left with $3600. How much did he spend on trav

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Question 887616: A man spends 70% of his salary on food expenses, 40% of the rest on traveling expenses, 90% of the rest on house rent and was finally left with $3600. How much did he spend on traveling expenses?
Answer by stanbon(75887) About Me  (Show Source):
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A man spends 70% of his salary on food expenses, 40% of the rest on traveling expenses, 90% of the rest on house rent and was finally left with $3600. How much did he spend on traveling expenses?
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Let his salary = "x".
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Equation:
x - 0.7x - 0.4*0.3x - 0.9[x-0.7x-0.4*3x] = 3600
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0.6(0.3x) - 0.9[0.6*0.3x)] = 3600
0.1(0.6*0.3x) = 3600
0.018x = 3600
x = 200,000.00 (total salary)
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Ans: Traveling expenses = 0.4(0.3x) = $24,000.00
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Cheers,
Stan H.
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