You need 2 bottles of salad dressing for 5 heads lettuce. How many will you if there are 70 lettuce?

Here's how to solve this:

1. Find the dressing per lettuce:

* You need 2 bottles of dressing for 5 heads of lettuce.

* Divide the dressing by the lettuce: 2 bottles / 5 lettuce = 0.4 bottles per lettuce.

2. Calculate the total dressing needed:

* Multiply the dressing per lettuce by the total number of lettuce: 0.4 bottles/lettuce * 70 lettuce = 28 bottles.

Answer: You will need 28 bottles of salad dressing for 70 heads of lettuce.