In the following section you will be asked several questions. Please do your best to answer as accurately as possible. The ages of Mark and Adam add up to 28 years total. Mark is 20 years older than Adam. How many years old is Adam? 4 If it takes 10 seconds for 10 printers to print out 10 pages of paper, how many seconds will it take 50 printers to print out 50 pages of paper? 10 On a loaf of bread, there is a patch of mold. Every day, the patch doubles in size. If it takes 40 days for the patch to cover the entire loaf of bread, how many days would it take for the patch to cover half of the loaf of bread?