Sarah, Leah, Haley, Lindsay, and Kim bought 4 bottles of water to share among themselves. They divided each bottle of water into 5 equal portions. Sarah took 1 portion from each bottle of water.

Sarah, Leah, Haley, Lindsay, and Kim bought 4 bottles of water to share among themselves. They divided each bottle of water into 5 equal portions. Sarah took 1 portion from each bottle of water. Which equation represents how much of a bottle of water Sarah took?

Sarah must have taken 4/5 of a bottle

First, the 4 bottles of water were divided into 5 equal portions;

4 x 5 = 20 portions.

Sara too 1 portion from each bottle;

1 portion x 4 bottles = 4 portions

Which equation represents how much of a bottle water Sarah took?

Since each bottle water was divided into 5 equal proportions and assuming that the bottle waters are of the same volumes, then Sarah has taken 4 out of 5 portions of a bottle water.