mark and ann together were allocated n boxes of cookies to sell for a club project . mark sold 11 boxes less than n and ann sold 2 boxes less than n . if mark and ann have each sold at least one box of cookies , but together they have sold less than n boxes , what is the value of n ?
if n = 12 mark sold 1 box and ann sold 10 boxes total 11 < 12 answer : c
add(11, const_1)