3. When a welder works for 3 h and an apprentice works for 5 h,
they earn a total of $175. When the welder works for 7 h and
the apprentice works for 8 h, they earn a total of $346. Determine
the hourly rate for each worker.

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%