Mathematics · Ratio and Proportion

Three dogs D1, D2, and D3 undergo a training programme. After the training, the distances covered by 3 steps of D1, 4 steps of D2, and 5 steps of D3 are equal. Further, in the time taken by D1 to take 5 steps, D2 takes 4 steps and D3 takes 6 steps. What is the ratio of the walking speeds of D1, D2, and D3 respectively?