Question

Find the number that if we subtract thrice of it from each of the two terms of the ratio 49/69 , the ratio becomes 2/3

Answer 1

Let the number be a
49-3x/69-3x=2/3
49-3x=138-6x/3
147-9x=138-6x
147-138=9x-6x
9=3x
x=3

Then the number is 3