If the mass of one of two particles is doubled and the distance between them is doubled, the force of attraction between the two particles will

The force of attraction between the two particles will become half.

Explanation:

Consider force F between two objects with masses m and m' which are placed r distance apart from each other.

Mass of first object = m

Mass of second object = m'

Distance between the  two objects = r

...(1) (Gravitational force)

If the mass of one of two particles is doubled and the distance between them is doubled the force between them be F'.

Mass of first object = m

New mass of second object = M = 2m'

Distance between the  two objects = R = 2r

...(2) (Gravitational force)

Dividing (1) from (2):

The force of attraction between the two particles will become half.

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.