The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate:
a) The mass of one wafer.
b) The number of wafers that the box can hold.
1 wafer = 64/4 = 16 grams
3200/16 = ? wafers/box