armer Fred knows that he will have to purchase 210kg of Dynamic Shifter fertiliser when it comes time for him to sow his new season of crop, sometime in September or October. Exactly when he plants the crop will depend upon when temperatures get above 25 degrees Celsius on a regular basis. Farmer Fred has had bad experiences with volatile Dynamic Shifter prices in previous years. His planned budget never seems to be executed due to prices being very different to his expectations, and in desperation he has sought the help of a friend, Hedger Harry. Hedger Harry has recommended that Fred use Dynamic Shifter futures to hedge his exposure to price movements in the fertiliser. There are September and December futures contracts available. However, deeming the maturity of the September futures to be too soon, Fred decides to take out a long position on December delivered Dynamic Shifter futures at $3.87/kg. On September 23 Fred decides that temperatures are high enough to sow the crop. He subsequently closes his position on December Dynamic Shifter futures, which are then trading at $4.19. a)If the spot price on September 23 of Dynamic Shifter fertiliser is $5.03/kg, calculate the price per kg