Depends on the level of intellegence of the person in question doing the puzzle/ the difficulty of the puzzle. I'd say about an hour and half-3 hours.
24 hours
There is 0.104167 Miles in 550 feet.
The marking "925-1000" on sterling silver indicates that the piece is 92.5% pure silver, which is the standard for sterling silver. The "550" marking could represent the specific manufacturer or designer of the piece.
xy=70000 x+y=550 Solve.
5.5 cm
Long ton = 2240 pounds, short ton = 2000 pounds(Long ton) = (2240 * 5) + 550 = 11750 pounds(Short ton) = (2000 * 5 ) + 550 = 10550 pounds
The Shyok River is approximately 550 kilometers long
Take it to a gunsmith.
The Remington 550 was made from 1940 to 1946, the 550-1 was made from 1946 to 1970, the 550 had 2 ejecting mechanisms, the 550-1 had 1 floating mechanism allowing it to shoot, shorts, longs, and long rifle shells.
1584 feet x 550 feet = 20 acres.
30 mi / 550 mph = .054 hr = 3.27 min.
Ask a gunsmith for help