Please help me as soon as possible

Ill mark the brainliest if you me with the these three questions 7,8,9

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Arational number that is equivalent to -20/4?