So we know that the weight on earth wo weight on neptune ratio is 5/7. So we want to know how much would someone who weighs 150 pounds weigh on neptune. We can write it like en equation. (5/7)*x=150. To get x we need to divide both sides by 5 and multiply by 7 and we get: x=150*(7/5) and that is equal x=210 pounds.
