My stuff is 1.5 more than your stuff.

More what? More beautiful? More valuable?

Well, due to my English it is hard to me to clarify this. Just think about all the stuff in a one bedroom apartment comparing to all the stuff in a large 4 bedroom house. If I want to express the concept that the house has much more "stuff" than the apartment does, what should I say?

Is this oK: The stuff in the house is 1.5 more "(in quantity?)" than the stuff in the apartment.

I have 1.5 times more stuff in my house than you have in yours.
My house can hold 1.5 times more stuff than yours.

It might be by weight, by volume, by count, etc.

Yeah! And how about this? My stuff is 1.5 times yours. I guess it works, right?

No. "is", a linking verb, does not work unless you use an adjective.
My stuff is 1.5 times as expensive as yours.

My stuff is your stuff - This is an invitation to share! You are saying - come and get it, you can have anything of mine that you desire.

How is that technically possible?
If you have 1, how can somebody else have 1.5 of your stuff which is only 1?
That would mean that the person owns 150% of your stuff, additional 50% that you don't have. Or are you saying that the other person possesses 50% more of something than you?
E.g. that they own 3 plasma TVs and you own just 2?

HolyBratHow is that technically possible?

If you have 1, how can somebody else have 1.5 of your stuff which is only 1?

You have 1 lbs. of sugar, he has 1.5 lbs. of sugar
He has one and a half times more stuff than you do if by stuff you're implying sugar

I guess, the author of the question meant something along the lines of:

No, that's not technically possible. But sometimes people say so to express rough concepts.

Thanks a lot, AlpheccaStars. I got your idea.

AlpheccaStarsNo. "is", a linking verb, does not work unless you use an adjective.

My stuff is 1.5 times as expensive as yours.

My stuff is your stuff - This is an invitation to share! You are saying - come and get it, you can have anything of mine that you desire.