Question

what number must be added to each term of the ratio 4:5, so that it may becomes equal to 5:6

Answer 1

$x \frac{4}{5} = \frac{5}{6 } \\ \\ 6(4x) = 5(5) \\ \\ 24x = 25 \\ \\ x = \frac{25}{24} \\ \\ x = 1 \times \frac{1}{24}$