I needs someone’s help pls

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

If 25% of y is 30, what is 60% of y?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1