Answer:
5 bars of soap for $4.00 is the better deal.
Explanation:
There are two offers on soap.
12 bars of soap for $10.00
and 5 bars of soap for $4.00
Since 12 bars of soap for $10.00
Unit price of bar of soap =

= $0.833 per bar
When 5 bars of soap for $4.00
Unit price of bar of soap =

= $0.8 per bar
Difference between the unit price = 0.833 - 0.8 = $0.033
Therefore, 5 bars of soap for $4.00 is the better deal.