Removing the last 0 of a number means that a number has been reduced by ten times; It is twice the number of B, which means that the number of B is 20 times that of A. The sum of A and B is 2 1 multiplied by B number 378/2 1= 18, and A number is 18*20=360.

30 because AB=ACAB=BD ∠ABC=∠ACB ∠BAD=∠ADB because DA is perpendicular to AC ∠ BAC ∠ Bad = 90 because ABC = ∠ Bad ∠ ADB = 2. +080-4 ∠ ADB ∠ BAC = 90-∠ DAB = 90-∠ ADB, so 180-4 ∠ ADB = 90-∠ ADB.

From the meaning of the question, we can know that the ratio of hens to chicks is 1: 10, that is to say, hens account for1/kloc-0 =11/and chicks account for/kloc-0.