In a two digit number, the ten's digit exceeds the one's digit by 3. If the digits are interchanged, and the resulting number is added to the original number, we get 143. Find the number.
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Answer:
85
Step-by-step explanation:
assume unit digit : y
then ten digit according to question : y+3
total number (y+3)*10+y=11y+30
after interchanging = 10y+ y+3=11y+3
11y+30+11y+3=143
22y+33=143
22y=143-33=110
y=110÷22
y=5
the original number = (5+3)*10+5
50+30+5
85
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