seven times a two digit no.is same as four times the no. obtained on interchanging the digits of the given no. write a linear equation using the above data.

Asked by  | 9th Mar, 2013, 01:20: PM

Expert Answer:

Let ones digit of the number be y and tens digit be x.
Number = 10x + y
Number obtained on reversing digits = 10y + x
 
From the given information, we get,
7(Number) = 4(Number ontained on reversing digits)
7(10x + y) = 4(10y + x)
70x + 7y = 40y + 4x
66x - 33y = 0
2x - y = 0
This is the required equation.

Answered by  | 9th Mar, 2013, 10:06: PM

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