The answer is 4. because if you divide 10 into 40 you get 4.
400*4 = 1600
Let 4x = 400. x = 400/4 =100. Therefore 4 * 100 = 400
first 400 is 4 times of 100 . so 80 percent of 400 is 4 times 80 which is 320. This can be done if the number is multipliable by 10.
it goes 56 times
24 goes into 400, 16 times not 4, or 100,or 22, 16 times!
400
400%
100
4
4
20 ! reading from left to right - all the multiplication totals to 400. 400/20 is 20.