Albert wants to buy some pens. He is comparing 4 different packs of pens. The number of pens in each pack and the cost of the pack is shown in the table below. Which two packs of pens have the same cost per pen?

Albert wants to buy some pens He is comparing 4 different packs of pens The number of pens in each pack and the cost of the pack is shown in the table below Whi class=