A truck carries a load of 50 boxes of 2types. if type one boxes weight 20kg each and type two boxes weigh 25 kg each ,and the total weight of all boxes is 1175 kg, then how many of each type are there? type one is and type two is ​

Answer these questions showing your work plz

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

What is the value of x in the this question ?