Calculate 1/7 of 84 can u plzz show me how to do it i hate fraction

Find the values of the variables in the kite

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?

If we pull out the middle player of team a and the fourth player of the team b. what will be the force of team a and team b? what is their sum of forces