A plant that is 6 inches tall grows 1 inch each week. Another plant is 4 inches tall and grows 2 inches each week
Enter the number of weeks it will take the two plants to reach the same height.
weeks
2 weeks, because the first week the second plant will grow to 6 inches and the first plant will grow to 7, the next week the first plant will be 8 inches and so will the second plant.
