Hi there!
In order to answer your question, you'll need to use the cross product method (let's say that Newtons = N):
9N on Earth = 2N on Namar
400N on Earth = xN on Namar
(2 × 400) ÷ 9 = xN on Namar
800 ÷ 9 = xN on Namar
88.888.. = xN on Namar
Since your answer must be to the nearest Newton, I'm guessing that you need to round your answer to the nearest whole number. This means that since the number in the tenths column is more than 5 (could also be equal to 5), you need to round the number up.
88.888... rounded to the nearest whole number = 89
Your answer is: The girl weigh 89 newtons on Namar.
There you go! I really hope this helped, if there's anything just let me know! :)
