Study the given graph and answer the question that follows.
The ratio of the total production of cement by company A in 2016 and company C in 2018 to the total production of cement by company B in 2017 and 2019 is:
1
9 ∶ 8
2
7 ∶ 6
3
8 ∶ 7
4
10 ∶ 9
Study the given graph and answer the question that follows.
The ratio of the total production of cement by company A in 2016 and company C in 2018 to the total production of cement by company B in 2017 and 2019 is: