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A man spend 75% of his income. when his income is increse by 20%. He increse his expenditure 10% . By what percent are his saving increse ?

  • arithmetic -

    Original income= I

    .25I=Savings original
    .15(I*1.20)=new savings.

    percent increase= (New-old)/old * 100
    = (.18I-.25I)/.25I * 100

    It appears his savings decreased.

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