Leena knits 10 rows in 12 min. at this pace, how long will it take her to knit the next 25 rows?
how many minutes did it take?

For 10 rows, she takes = 12 min.
So, for 1 row, she'll take = 12/10 

Now, for 15 rows, it would be: 12/10 * 25 = 12/2 * 5 = 60/2 = 30

So, Your Final Answer would be 30 minutes

Hope this helps!

There is 240 red cars and there is 400 blue cars because 240/3=80 and 80*5=400