Answer: 100 DVD Players
Step-by-step explanation:
To solve this problem, I used proportions. First, I set my ratios (15:6 and __:40) which represented the number of DVD players to hours. Then I simplified the first ratio (15:6 ---> 5:2). To find the missing number in __:40, I multiplied 5:2 by 20 to get 100:40. My final answer was 100.