Question

The numerator and denominator of a rational number are in ratio 3:4. If the denominator is increased by 3,The ratio becomes 3:5. Find the rational number

Answer 1

3x/4x+3=3/5

3x*5=(4x+3)*3

15x=12x+9

15x-12x=9

3x=9

x=3

so 3*3/4*3+3=9/15