Let the height of Sapling is x foot. As height of fence is four times the height of Sapling therefore height of fence=4x As height of Sapling is 3 feet shorter than height of fence So 4x=x+3 4x-x=3 3x=3 x=3/3 x=1 Therefore, height of Sapling is 1 foot.
The solar system is a system constrained by the gravity of the sun and the objects that orbit it. The solar system was formed 4.6 billion years ago by the gravitational collapse of a huge interstellar molecule cloud.