Best deal would be 4.95 for 3 because if you divide the numbers you end up paying more money for the 4 sandwiches. For comparison heres my results
$4.95 for 3 - $1.65 each
$6.72 for 4 - $1.68 each
There is no figure mentioned in question is it is not possible to guess answer
20/25*2(5-10)=20/25*10-20 later calculate the numbers
Bob would take as long as 6 hours to paint the house:
x=12÷2
x=6
I think the answer is: ACD