7. In a two-digit number, the digit in the tens place is three times the digit in the units place. If the digits are reversed, the number decreases by 36. find the number
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Answer:
Step-by-step explanation:
Let the number be 10x + y
Given x = 3y,........(1)
After reversing the number we get
10y + x
Then according to question
10x + y - ( 10y + x ) = 36
> 9x - 9y = 36
> x - y = 4,...........(2)
From solving eq 1 and 2 we get,
X = 6
Y = 2
So the number is 60 + 2= 62
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