Question

A number is three times the sum of its digits. Find the number and explain it very easily.​

Answer 1

Answer:

27

Step-by-step explanation:

Let the ten's digit is x and the one's digit is y

The number is=10x+y

The equation would be

10x+y=3(x+y)

10x-3x=3y-y

7x=2y

x/y=2/7

Let x=2m and y=7m

Then number=10×2m+7m=27m

Sum of digits=2m+7m=9m

Which is 1/3 of the number then,

The number is 27

Answer 2

Answer:

For three digit numbers we know the maximum value of sum of digits is 27 it's thrice will be 81 which is not a 3 digit numbe hence no 3 digits number satisfies ,so only 27 and 0 are solutions.

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