People's education edition, sixth grade math workbook, 365438 pages +0.32, answer.
Page 312.a421231054b9183123.6323.x345678y2.12.83.54.24 Just fill in the blanks.
Page 32 (1) A: proportional, inversely proportional. (2) Answer: It takes 2 hours. (3) Answer: 40 kilometers per hour. Call: 120053 165 if you want to know.