Answer-In a two digit positive number, the digit in the unit’s place is equal to the square of the di...

Let the number 10x x 2 According to the question, 10x2 x - 10x x2 54 9x2 - x 54 x2 - x 6 x2 - x - 6 0 x - 3 x 2 0 x 3 or x -2 Number 39 x 2 60 of 39 60100xx39 23.4

Question

In a two digit positive number, the digit in the

unit’s place is equal to the square of the digit in ten’s place, and the difference between the number and the number obtained by interchanging the digits is 54. What is 60% of the original number?

A 23.4

B 19.8

C 15.9

D 28.5

E None of these