Answer:
0.4
Explanation:
40% can be written as 0.4. Recall that to get a decimal to a percent or vice versa, you can move the decimal place 2 places to the right or left to get the desired outcome. In this case, the decimal needs to move 2 places to the left leaving you with the decimal 0.4 or 4 parts out of 10 (40 parts out of 100= 40%)