Answer:
n = 24
Explanation:
They are very similar actually! You would set up a like equation which would be 35/28 = 30/n
then you would cross multiply, which gives you 35n = 840.
you divide 35 on both sides and then you get
n=24 hope this helped!
here's the work I did, just incase you need reference! ( it was done on the table so its very blurry, sorry! )