5. Mom, Dad, Vasya, and Nina were making dumplings. Mom and Nina made 4 more dumplings than Dad and Vasya, and Mom and Dad made 2 more dumplings than Vasya and Nina. Then Vasya and Mom left, and Nina and Dad continued making dumplings at the same speed, and each made twice as many dumplings as they did initially. Who made more dumplings now, Mom and Dad together or Vasya and Nina together?
Answer: Equally

Solution: Two moms, Nina and dad made 6 more dumplings than two Vasya, Nina and dad, which means mom made 3 more dumplings than Vasya. Then, Nina made 1 more dumpling than dad. After the break, Nina made 2 more dumplings than dad, and together they made 3 more dumplings than dad. Mom had 3 more dumplings left than Vasya. Therefore, mom and dad made as many dumplings as Vasya and Nina.

Comment: Correct solution - 20 points. Correct answer based on an example - 15 points. The solution (or example) is generally correct but contains an error that makes the answer incorrect - 5 points are deducted. The solution is started, and there is some progress - 5 points. The solution is started, but the progress is insignificant - 1 point. The correct answer is given without explanation - 0 points.

## Variant 4