The sum of digits of a number is 12. If both are interchanged, then the newly formed number is 36, more than the original number. What is the original number?
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Answered by
1
Answer:
Sorry I don't know it's answer i hope you get the answers soon
Answered by
1
Answer:
48
let the first digit at ones place be x
second digit at tens place will be 12-x
original number formed =
10(12-x) + x
120-10x + x
120 -9x
now interchange the digits
at ones place =12-x
at tens place = x
new number formed
10(x) + 12-x
10x+ 12 - x
9x + 12
according to the question
new number - original number =36
9x+12-(120-9x)= 36
9x +12 - 120 + 9x = 36
18x = 36 + 108
18x = 144
x = 144÷ 18
x = 8
original number is
120- 9x
120- 9(8)
120 - 72
48
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