1) let's count the payment that you would do on the card E
2.51% of $1,014.22
percentage can be exchanged to numbers like this:
x%=x0.01, so 2.51 percent is 0.0251:
So now we multiply:
0.02511014.22=25.46
2) now let's count Card D payment:
3.57%691.64=0.0357691.64=24.69
and the difference is:
25.46-24.69=0.77
So the answer is D)!
