Answer: THE 100G PACKET
Step-by-step explanation:
1) FIND OUT THE COST OF COFFEE PER G
So for the 100g coffee it costs ( 8.10 / 100) = $0.081
AND
For the 25g coffee it costs (2.05 / 25) = $0.082
The coffee that is 100g is mor cost-efficient so that is your answer