Answer:
14 fleeces can be made from 280 large plastic bottles.
Explanation:
Given that:
20 large plastic bottles can be recycled to make 1 fleece jacket.
Ratio of bottles to jacket = 20:1 
Number of large plastic bottles = 280 
Let, 
x be the number of fleece jackets.
Ratio of large bottles to fleece jackets = 280 : x
This is a proportional relationship.
20 : 1 :: 280 : x 
Product of mean = Product of extreme 
280 = 20x 
20x = 280
Dividing both sides by 20 

Hence, 
14 fleeces can be made from 280 large plastic bottles.