While teaching about the Indian national flag, teacher asked the students that how many lines are there in blue colour wheel ? One student replies that it is 8 times the number of colours in the flag. While other says that the sum of the number of colours in the flag and number of lines in the flag and number of lines in the wheel of the flag is 27. Convert the statements given by the students into linear equation of two variables. Find the number of lines in the wheel. What does the wheel signifies in the flag?