Question

4. A number of two digits is such that its units digit is x and tens digit is (12 - x). When
the digits are reversed the number is increased by 54. Find the number. ​

Answer 1

Step-by-step explanation:

Let the digit in the unit;s place be x and the digit in ten's place be y. Then,

Number = 10y+x

According to question,

y=3x

Also,

10y+x−54=10x+y

x−y=−6

Solving these equations, we get,

x=3 and y=9

Hence, number is 10y+x=93

HERE IS YOUR ANSWER

Answer 2

Answer:

69

Step-by-step explanation:

original number=10(12-x)+x

reverse number =10x+(12-x)

a/q ,

10x+(12-x)=10(12-x)+X+54

=X=9 so original number=69