To figure out how many times twenty two goes into one hundred sixty, you would divide them. To be precise, 160 divided by 22 would be 7.27272727273 but with a remainder, 22 goes into 160 eight times.
It would be B, because when we do $4.25-$2.60=$1.65. When we divide that be 0.25, that equals 6.6, but you can't have a percent of a coin, so we round down.