A group of 19 beavers get together to build a dam. They decide to divide into teams with 4 beavers on each full team. After they make as many full teams as possible, the rest of the beavers make a smaller team.

16

step-by-step explanation:

2 x 40 = 80

80/5

= 16

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.