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A two digit no is four times the sum of its digit and twice the product of its digit |
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Answer» Let the digits be x,y The number = 10x+y Number = 4 times SUM of digits 10x+y = 4(x+y) 10x + y = 4X + 4y 6X = 3y x = 3y/6 x= y/2 Number = 2 product of digits 10x+y = 2 (XY) (10 * (y/2)) + y = 2 * (y/2) *y 5y+y = y^2 6y = y^2 y = 6 x = y/2 x = 3 The number is 10x+y =10*3+6 =30+6 = 36 The number is 36. |
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