Kai paid 2 more dollars for each calculator this is because if one pack of pens=6 dollars and cole has one pack then u do 24-6=18 18 divided by 2 = 9 so cole spent 9 dollars of each calculator. Kai bought 3 calculatoes and 2 packs of pens so u would do the 2 packs of pens which equal 6 dollars each which would give u a total of 12. Then do 45-12=33. So 33 divided by 3 (the number of calculators bought) which would equal 11 11-9=2 so kai paid 2 more dollars
