Which is farther east Newfoundland or Puerto Rico and how do yo know?

Newfoundland is farther east than Puerto Rico. This can be determined by looking at a map or globe and comparing the longitudes of the two locations. Newfoundland's longitude is approximately 52°37'W, while Puerto Rico's longitude is approximately 66°05'W. Therefore, Newfoundland is located approximately 13°28' farther east than Puerto Rico.