Percentage: The price of soap is collectively decided by five factors: raw materials, research, labour, advertisements and transportation. Assume that the functional relationship is Price of soap = (k’ × Raw material costs × Research costs × labour costs × Advertising cost × Transportation cost). If there are respective changes of 20%, 20%, -20%, 25% and 10% in five factors, then find the percentage change in the price of soap.

The price of soap is collectively decided by five factors: raw materials, research, labour, advertisements and transportation. Assume that the functional relationship is Price of soap = (k’ × Raw material costs × Research costs × labour costs × Advertising cost × Transportation cost). If there are respective changes of 20%, 20%, -20%, 25% and 10% in five factors, then find the percentage change in the price of soap.