Answer:
20 bars for $23
Step-by-step explanation:
8 bars for $10 you have to multiply 8 by 5 to get 40 so multiply $10 by 5 and you get $50
20 bars for $23 you have to multiply 20 by 2 and you get 40, so multiply $23 by 2 and you get $46 dollars there for 20 for $23 dollars is the better buy
:)