Question

A number consists of 2 digits such that the digit in ones place is thrice the digit in tens place. If 36 be added then the digits are reversed. Find the number

Answer 1

Answer:26

Step-by-step explanation:Let AB be the number

Given B=3A

And 10A+B+36=10B+A

Since B=3A

So 10A+3A+36=30A+A

Solving A=2

And B=6

Answer 2

Answer:

Step-by-step explanation:

Let a number be XY.

Given that Y=3X.

and also X is in ones place.

                                   XY+36=YX

                              10X+Y+36=10Y+X

                            10X+3X+36=10(3X)+X

                                13X+36=30X+X

                                   13X+36=31X

                                    36=31X-13X

                                       36=18X

                                       36/18=X

                         Therefore, X=2

Then, Y=3X

          Y=3(2)

          Y=6

Hence the no. is 26.