Henry and his children went into a grocery store and where they sell peaches for $2
each and mangos for $1.25 each. Henry has $20 to spend and must buy no less than
10 peaches and mangos altogether. If Henry decided to buy 4 peaches, determine all
possible values for the number of mangos that he could buy. Your answer should be a
comma separated list of values. If there are no possible solutions, submit an empty
answer.