Okay so, I am assuming the model is smaller so it would be 0.34m long.
The model has to be 200 times smaller than the actual plane Divide 68/200 and you get 0.34 Then to check your answer, multiply 0.34 by 200 which is 68 meaning 0.34:68 is equal to 1:200
Assuming the model is bigger (just in case) it would be 13,600m long.
The in this scenario, the model has to be 200 times bigger so it would be 68(200) which is 13,600
So what you want to do is divide 6.78 by 2 to find one half of a pound. Then once you do that add your answer to 6.78 to equal one pound and a half. Hope this helps!
