A two-digit number is obtained by either multiplying the sum of the digits by 8 andthen subtracting 5 or by multiplying the difference of the digits by 16 and thenadding 3. Find the number.
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let the unit digit and the ten's digit of the number be x and y respectively.
therefore the number = 10y + x.
sum of digits = x+y
10y + x = 8(x+y) - 5
10y + x = 8x + 8y = - 5
7x - 2y = 5 -------- i)
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