The digits of a 2-digit number differ by 5. If the digits are interchanged and the resulting number is added to the original number, we get 99. Find the original number.
Answers
Answered by
67
let unit place at two digit number is y and and x
at tens place
then the nuber is 10x+y
and x-y=5
if the digit are interchanged means
10y+x+10x+y=99
11x+11y=99
11(x+y)=99
x+y=9
x-y=5
x=5+y
5+2y=9
y=2
x=7
the number is 72 hope it help you if you are satisfied then plzz mark me as brainliest
at tens place
then the nuber is 10x+y
and x-y=5
if the digit are interchanged means
10y+x+10x+y=99
11x+11y=99
11(x+y)=99
x+y=9
x-y=5
x=5+y
5+2y=9
y=2
x=7
the number is 72 hope it help you if you are satisfied then plzz mark me as brainliest
Answered by
11
Answer:
the answer of this question is 72
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