Some native american tribe made jewelry with dentalia shells. each denalia shell is 2 inches long how much longer would a necklace made with 25 shells be than a necklace made with 20 shells?

Answer: 10 inches

Step-by-step explanation:

We know that each single Denalia shell is 2 inches. So let's calculate how many inches a 25 shell necklace would be

25 (number of shells) * 2 (inches per 1 shell) = 50in

Next let's find the second necklace with 20 shells

20 (number of shells) * 2 (inches per 1 shell) = 40in

Finally we take the difference between the two

50in - 40in = 10 inches

Thus, the difference between a 25 shell necklace and a 20 shell necklace is 10 inches.