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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation 5/(1+5%)+5/(1+5%)^2+105/(1+5%)^3 .
    Question type: Mathematical calculation
    Solution:
          5/(1+5%)+5/(1+5%)^2+105/(1+5%)^3
        =5/1.05+5/(1+5%)^2+105/(1+5%)^3
        =5/1.05+5/1.05^2+105/(1+5%)^3
        =5/1.05+5/1.05^2+105/1.05^3
        =5/1.05+5/1.1025+105/1.05^3
        =5/1.05+5/1.1025+105/1.157625
        =4.761905+5/1.1025+105/1.157625
        =4.761905+4.535147+105/1.157625
        =4.761905+4.535147+90.702948
        =9.297052+90.702948
        =100

    Answer:5/(1+5%)+5/(1+5%)^2+105/(1+5%)^3=100


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