Answer:
5 onions
Explanation:
This is a proportion problem. I'll set up a table to help you better understand it.
Examine the table. To get from 2 to 16, we are multiplying by 8. To get from 16 to 40, we are multiplying by 2.5.
So, to find the amount of onions, we must divide 40 by 8 because 16/2 = 8.
40/8 = 5