Final answer:
Each of the five vases contains 2.8 pounds of sand, obtained by dividing the total amount of sand (14 pounds) by the number of vases (5).
Step-by-step explanation:
To determine how much sand was in each vase, we need to divide the total amount of sand by the number of vases. Raj had a 14 pound mixture of sand, and he put an equal amount of this mixture into each of 5 vases. To find the amount of sand per vase, we divide 14 pounds by 5.
14 pounds ÷ 5 vases = 2.8 pounds per vase
Therefore, each vase contains 2.8 pounds of sand.