Question

The sum of the digits of a 2 number is 12 .The number is6 times the units digit. Find the number

Answer 1

Answer: 36

Step-by-step explanation:

According to question...

let the unit digit = x

tens digit = y

x + y = 9 (1)

the number is 6 times the unit..

NUMBER ==> 10x +y

unit ==> y

10x + y = 6y

10x + y = 6y

10x = 5y

y = 2x (2)

put the value of y in equation (1)

x + y = 9

x + (2x) = 9

3x = 9

x = 3

put value of x in equation (2)

y = 2x

y = 2(3)

y = 6

so the value of unit and tens digit is 3 and 6 respectively

place the value of x in unit and y in tens

xy = 36

so the number is 36...

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