Guarantee of Profit Questions

Pinki, Deepti and Kaku are partners sharing profits in the ratio of $5:4:1$. Kaku is given a guarantee that his share of profits in any given year would not be less than $\text{Rs. }5000$. Deficiency, if any, would be borne by Pinki and Deepti equally. Calculate the deficiency assumed by Pinki and Deepti for each case separately if profits for the year were:Case I - $\text{Rs. }40,000$ Case II - $\text{Rs. }60,000$