2/5 of the cake are left. Tiffany ate 1/5 and Omer ate 2x the amount, which is 2/5.
Hi,
Here is the equation.

Each person would get 4.28 marbles.
Hope this helps.
r3t40
Well, it depends how much is each candy bar?
.6578 this would be the answer
The pattern here is doubling each number.
Sequence to the seventh term:
Answer: c) 64