A bag contains 120 marbles. Some are red and the rest are black. There are 19 red marbles for every black marble. a. How many red marbles are in the bag?

the answer should be in the picture.

explanation:

to push or pull an object in a certain direction is known as force. a force in moving an object from one place to another.

force depends on the mass of an object. so, more is the mass of an object more will be the force required to move the object.

thus, we can conclude that the use of force to move an object is push or pull.