A company selling clothing on the Internet reports that the packages it ships have a median weight

Question:

A company selling clothing on the Internet reports that the packages it ships have a median weight of 68 ounces and an IQR of 40 ounces.
a) The company plans to include a sales flyer weighing 4 ounces in each package. What will the new median and IQR be?
b) If the company recorded the shipping weights of these new packages in pounds instead of ounces, what would the median and IQR be? (1 lb. = 16 oz.)