Question

the sum of the digits of a two digit number is 10 and the digits at unots place is 2/3rd ofntye digits at the tens place .find the no

Answer 1

let the tens digit is x.
and let ones digit be y
now according to question X + Y is equal to 10
now it is given in the question that's the digit at unit place is two third of the digits at the tens place
therefore at the place of why we can put two third of its because the second number is two third of the first number
x+2/3x=10. (I)
3x+2x/3=10
5x/3=10
5x=10*3
5x=30
x=30/5=6.
therefore the number of 10 digit will be 6 now we put x is equal to 6 in equation then we get Y is equal to 4.