.

The ratio of Nitrogen to Phosphorus in a bag of lawn fertilizer is 5 pounds of Nitrogen to 2 pounds of Phosphorus. What is the total number of pounds of Nitrogen in 4 bags of lawn fertilizer?

7

10

20

40

...

1 answer

20 pounds

Each bag contains 5 pounds of Nitrogen, so 4 bags would contain 4 x 5 = 20 pounds of Nitrogen.