Bob and Carol do a job together in 2 hours. Bob can do the job in 6 hours by himself. How long would it take Carol by herself? 8 hours
3 hours
4 hours
6 hours​

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers