Answer:
24; 360; 12; 2.5%; 20%
Explanation:
for the first one through the third one you just multiply
400 * 0.06 is 24
900 * 0.4 is 360
100 * 0.12 is 12
for the last 2 you have to divide the first number by the second number
15 / 600 is 0.025 or 2.5%
60 / 300 is 0.2 or 20%