Question

The sum of digits of a 3 digit number is 12 the middle digit is eqaual t half the sum of other two. If the order of digits is reversed the number is diminished by 198 find the no.

Answer 1

➡️heya

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➡️ Let the three digit number be xyz

➡️ ACCORDING TO THE QUESTION

➡️ x + y + z = 12 ..... Equation ( i )

➡️ y = { x + z }/2 .... Equation ( ii )

➡️ 100y + x = 100x + y - 198

➡️ x - y = 2 .... Equation ( iii )

➡️ Solve Equation i and ii we get

➡️ y = 4

➡️ z= 2

➡️ x= 6

So, the three digit number is xyz

I,e 642