tweety pie

i really need help with this biology question: An experiment was carried out to determine the effect of temperature on the activity of an enzyme digesting the protien gelatin. The activity can be shown by the production of amino acids when gelatin is digested. the experiment at 45*c was continued for a further 7 hrs. at the end of this an additional 292mg dm-3 of amino acid had accumulated. calculate the mean production during the 10 hrs at 45*c. (at 45*c the rate of production of amino acid is 98mg dm-3). i would really appreciate it if u could help me out and also explain how u came up with the answer. Thank-you.