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one of the two digit number is three times the other digit.if you interchange the digitals of this two digit number & add the resulting number to the original number you get 88. what is the original number?

Posted by Amith Keshav 6 years, 9 months ago

CBSE > Class 08 > Mathematics

1 answers

Gaurav Seth 6 years, 9 months ago

Let the digit in units place = x
The digit in tens place = 3x
The number is 10(3x) + x = 31x

Digits are interchanged
Digit in units place = 3x
Digit in tens place = x

The new number= 10(x) + 3x = 13x

Sum of these two numbers = 88

31x + 13x = 88

44x = 88

x = 2

3x = 6

The original number is 62

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CBSE > Class 08 > Mathematics