A stalk of corn grew 42 inches in a week. Find the unit rate in inches per day

To find the unit rate, we need to set the number of days to 1. Therefore, we will divide by 7. We also have to divide 42 by 7 to make sure the equation stays proportional. Using this knowledge, we can see that if the corn grew 42 inches in 7 days, it grows 6 inches per day.

1 week = 7 days

42 inches per week

We want to find out how many inches grow per day.

42 / 7 = 6

So, everyday the corn grows 6 inches.