L, M and N are partners sharing profit and losses in the ratio of 25:15:9 . M retires. It is decided that the profit sharing ratio between remaining partner will be the same as existing between M and N after the retirement of L. Calculate Gaining ratio

X, Y and Z are partners sharing profits in the ratio of 1/2, 2/5 and 1/10. What will be the new ratio of X and Y after the retirement of Z.