The answer is 22 because in order to divide fractions (in this case we would have 11 as a fraction), you need to multiply one fraction by the reciprocal of the other fraction (the flipped form of a fraction).
To find this, we would do * .
This would come to be , and when simplified by dividing the numerator and denominator by 9, you get 22.
If Joe gave 5 pics to site A. Site A would give him $0.75*5=$3.75 If Joe gave 5 pics to Site B. Site B would give him $0.25*5=$1.25 3.75-1.25=2.50 Site A gave him $2.50 more than Site B.