[ealgeone]

If Grace saves then I know plenty of Roman Catholics and Mormons that are saved.

ON the Mormon side....no.

Those who follow the Mormon faith also believe that they can attain heaven through works (Doctrine and Covenants 58:42–43; 2 Nephi 9:23–24; Alma 34:30–35; Articles of Faith, p.92). While they claim faith in Christ, they also rely on following the commandments of the Mormon Church (Doctrines of Salvation, vol. 1, p 188; Mormon Doctrine, p. 670) and practicing good works (2 Nephi 25:23; Alma 11:37) in order to achieve salvation. The Bible is very clear on this point, stating that good works can never earn the way to heaven (Romans 11:6; Ephesians 2:8–9; Titus 3:5) and that faith in Jesus Christ alone is the only way to salvation (John 10:9; 11:25; 14:6; Acts 4:12). Salvation by grace is incompatible with salvation by human works (Romans 11:6). Read more: http://www.gotquestions.org/Mormons-Christians.html#ixzz3SZu3WbKO

Are there saved Roman Catholics? Very possibly. However, those counting on Mary to help with their salvation, who appeal to Mary for their salvation, and who pray to Mary would be in doubt.

[JAKraig]

Mormons do not believe they are in any way saved by works. They do believe however that works are a display of faith. Without works faith is dead.

[Elsie]

Are there saved Roman Catholics? Very possibly. However, those counting on Mary to help with their salvation, who appeal to Mary for their salvation, and who pray to Mary would be in doubt.

Likewise...

Are there saved Mormons? Very possibly. However, those counting on Joseph to help with their salvation, who appeal to Joseph for their salvation, and who pray to Joseph would be in doubt.