sum of the digit of two digits number is 8 the digit in tens place is thrice the digit in unit place find the number

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Solution

let the number be XY

X+Y =8

X = 3Y

substituting in the above equation

3Y+Y =8

4Y =8

Y = 2

X = 3Y = 3*2 = 6

so the numer is 62

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