The following bar graph shows exports of cars of type A and B (in `millions) from 2014 to 2018.

What is the ratio of the total exports of cars of type A in 2014 and 2017 to the total exports of cars of type B in 2015 and 2016?

To find the required ratio, we first extract the values of the exports for the specified types of cars in the given years from the provided bar graph:

1. Total exports of cars of type A in 2014 and 2017:
From the graph, the dark grey bars represent type A cars:
• Exports of type A in 2014 = 200 million
• Exports of type A in 2017 = 175 million
Summing these values:

$\text{Total Type A (2014 + 2017)}=200+175=375\text{million}$

2. Total exports of cars of type B in 2015 and 2016:
From the graph, the light grey bars represent type B cars:
• Exports of type B in 2015 = 250 million
• Exports of type B in 2016 = 200 million
Summing these values:

$\text{Total Type B (2015 + 2016)}=250+200=450\text{million}$

3. Ratio of the total exports of type A (2014 and 2017) to type B (2015 and 2016):

$\text{Ratio}=\frac{375}{450}$

Dividing both the numerator and the denominator by their greatest common divisor (75):

$\text{Ratio}=\frac{375/75}{450/75}=\frac{5}{6}$

Thus, the simplified ratio is 5 : 6.