Question

shravan fills petrol every 9 days and sarthak fills every 12 days.they both fill petrol on saturday.on which day,will they fillpetrol together again

Answer 1

Answer:

One 3 day of filling petrol

Answer 2

Answer:

They will both fill petrol on the 36th day.

Step-by-step explanation:

Since Shravan fills petrol every 9 days and I know that they are starting to fill petrol on the same day, I know that Shravan will need to refill their petrol on the:

9th day, 18th day, 27th day, 36th day.........

and, we know that Sarthak fills every 12 days, so they will need to fill on the:

12th day, 24th day, 36th day.....

Now, we need to look for the days that both of them fill petrol on. I noticed that they both need to refill their petrol on the 36th day so, the answer is that they will both need to fill petrol together on the 36th day.