Question

Sum of digits of a two digit number is 6. Four times this number is seven times the

number obtained by reversing the order of the digits. Find the number.​

Answer 1

The required answer is for your question

Answer 2

Answer:

Let the two digits be x and y

x+y=6----(1)

The number is 10x+y and reverse is 10y+x

4(10x+y)=7(10y+x)

40x+4y=70y+7x

33x-66y=0

x-2y=0-----(2)

From (1) &(2)

x+y=6

x-2y=0

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3y=6

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y=2

then, x=4

Hence the number is 42

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