Question

in a two digit number the unit digit is double stright tens dight lf 36 is addad to the number ln dighit interchange their pleace find the number

Answer 1

Answer:

Let the tens digit be x. 

Let the tens digit be x. Hence, the units digit will be 2x

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12x

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21x

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x⇒12x+36=21x

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x⇒12x+36=21x⇒21x−12x=36

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x⇒12x+36=21x⇒21x−12x=36⇒9x=36

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x⇒12x+36=21x⇒21x−12x=36⇒9x=36⇒x=4

Let the tens digit be x. Hence, the units digit will be 2xNumber =10×(x)+(2x)=12xWhen 36 is added to the number, the new number formed =12x+36As the digits are reversed, we can also write the new number as 10×(2x)+x=21xHence, 12x+36=10×(2x)+x⇒12x+36=21x⇒21x−12x=36⇒9x=36⇒x=4Hence, the original number =12x=12×4=48