If ABC ~ EDC, Find the value of X

Don't know how to find x given these segment lengths

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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%