The given bar graph shows exports of cars of type A and B (in ₹ millions) from 2014 to 2018. Study the graph and answer the question that follows.

What is the ratio of the total exports of cars of type A in 2014 and 2018 to the total exports of cars of type B in 2015 and 2017?

The correct answer is 20 : 21.

By carefully reading the bar graph, we can extract the following export values (in ₹ millions) for cars of type A and type B across all five years:

Type A exports:
2014 → 200 | 2015 → 150 | 2016 → 275 | 2017 → 175 | 2018 → 300

Type B exports:
2014 → 225 | 2015 → 250 | 2016 → 200 | 2017 → 275 | 2018 → 325

Now, the question asks for the ratio of the total exports of Type A in 2014 and 2018 to the total exports of Type B in 2015 and 2017.

Step 1: Calculate the total exports of Type A in 2014 and 2018.

A_{2014}+A_{2018}=200+300=500

Step 2: Calculate the total exports of Type B in 2015 and 2017.

B_{2015}+B_{2017}=250+275=525

Step 3: Form the ratio and simplify.

\text{Ratio}=500:525

To simplify, find the GCD of 500 and 525. Both are divisible by 25:

\frac{500}{25}:\frac{525}{25}=20:21

Therefore, the required ratio of total exports of Type A in 2014 and 2018 to total exports of Type B in 2015 and 2017 is 20 : 21.