Answer:
A) 3/56 + 27/56 = 30/56 ÷ 2/2 = 15/28
Explanation:
So, there's 3/56 cities that have a lake and 27/56 cities that have a river.
Since the question is asking how much have a lake or river, we add them up.
3/56 + 27/56 = 30/56
(Divide by 2 since that's the common factor)
30/56 ÷ 2/2 = 15/28