Since he has 24 trees and 4 kinds of trees you divide them and get 6 that means there 6 trees in one kind so he already watered 2 kinds of trees and so you have 2 kinds of trees left so you do 6 × 2 = 12 the answer is 12
Temperature after 20 minutes is found by multiplying-2.5 by 20 since it goes down by 2.5 degrees for one minute. -2.5 * 20 = -50. Adding this to 180.3 will give the temperature 130.3 degrees.