Let's say a person's weight on Earth has a value of 5. It would be 7 on Neptune. We need to figure out what number was multiplied by 5 so that it became 7. To do that, divide 7 by 5 and you get 1.4.

The problem tells us that this one person weighs 150 pounds on Earth. Multiplying that figure by 1.4 will give us 210, and therefore, **the person will weigh 210 pounds on Neptune.**