The Redskins had a number of efficient offensive weapons. Quarterback Joe Theismann won the NFL Most Valuable Player Award for being the second Passer rating in the league behind Steve Bartkowski, completing 276 out of 459 (60.1 percent) of his passes for 3,714 yards, 29 touchdowns, and only 11 interceptions. He rushed for 234 yards and another touchdown. Washingtons main deep threats were wide receivers Charlie Brown (wide receiver) (78 receptions, 1,225 yards, and 8 touchdowns) and Art Monk (47 receptions, 746 yards, and 5 touchdowns), with the latter fully healthy after the previous years injury that caused him to miss the entire postseason.  Wide receiver Alvin Garrett, who replaced Monk during that time, emerged as a significant contributor by catching 25 passes for 332 yards. Fullback John Riggins once again was the teams top rusher with 1,347 yards, and set a then-NFL record by scoring the most rushing touchdowns in a season (24). Multi-talented running back Joe Washington recorded 772 rushing yards, while catching 47 passes for 454 yards and 6 touchdowns.  Kicker Mark Moseley led the NFL in scoring with 161 points, while Riggins ranked second with 144, making them the first teammates to finish a season as the NFLs top two scorers since 1951.  Washingtons powerful offensive line, "The Hogs", were led by two Pro Bowlers, guard Russ Grimm and tackle Joe Jacoby.
Question: How many rushing touchdowns did Riggins and Washington and Theismann have combined?
Answer: 31