Answered

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an apple, an orange and a pear cost P40 a pear cost P5 more than an apple while an orange coct P3 less than a pear. how much is the cost of each fruit?

Sagot :

Rider21idn
We will let the following:
            A = cost of Apple
            O = cost of Orange
            P = cost of Pear

From the given problem we will have these equations:

          A + P + O = 40                  Equation 1
                       O = P - 3              Equation 2
                       P = A + 5             Equation 3

Now lets solve for A in Equation 3:
  
                      P = A + 5
                 P - 5 = A                    Equation 4

Lets substitute Equation 2 and Equation 4 into Equation 1:

           A + P + O = 40
  P - 5 + P + P - 3 = 40
                 3P - 8 = 40
                 3P = 40 +8
                 3P = 48 
                   P = 48/3
                   P = 16   Cost of Pear        ANSWER

Now lets substitute P = 16 into Equation 2:
                    O = P - 3
                    O = 16 - 3
                    O = 13 Cost of Orange        ANSWER
Now lets substitute P = 16 into Equation 4:
                   P - 5 = A
                  16 - 5 = A
                       11 = A   Cost of Apple      ANSWER
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