Question

the sum of the digits of a certain three digit number is 12.If the hundreds digit is three times the tens digit,is one-half the ones digit ,what is the number

Answer 1

Number is 624
hope it helps

Answer 2

Let the unit digit be x

• Ten's digit is one half of one's Digit
So,

Ten's digit = 1/2×x

That is x /2


• Hundreds digit is three times the tens digit

Hundreds digit = 3 ( x/2 )

That is 3x / 2


[ For solution refer the attachment ]

One's Digit = 4

Ten's digit = 2

Hundreds digit = 6

As we know the format of three digit number that is :-

=> Hundreds + Ten's + Ones


So, the required number is 624