Answers

2014-10-04T21:49:34+05:30
Let pens and pencils be x and y
then,
        59x+47y=513_______1 and 47x+59y=441_________2
                      
                   59x+47y=513
                   47x+59y=441
                 _____________
                x=7.5   y=1.5
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  • Brainly User
2014-10-04T21:52:22+05:30
Let cost of a pen = Rs.m and cost of a pencil = Rs.n

59m + 47n = 513    ---------------(1)
47m + 59n = 441    ---------------(2)

Subtracting (2) from (1),
12m - 12n = 72 ==> m - n = 6 -------(3)

Putting m = n + 6 from (3) in (1),
59(n + 6) + 47n = 513 ==> n = 159/106 = 3/2 = Rs. 1.5

Hence cost of a pencil = Rs.1.5 and cost of a pen = Rs.(1.5 + 6) = Rs.7.5


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