Carly sold 18 rolls of wrapping paper. That is 2 times as many rolls as Jasmine sold, How many rolls of wrapping paper did they sell all together?

Carly sold 18 rolls.

Jasmine sold half of 18 because Carly sold 2 times as many rolls as Jasmine did.

So therefore Jasmine sold 9 rolls.

All together, this would be 18 + 9 = 27 rolls.

They sold 27 rolls all together.