Question

I need help with this for homework, I also need all the work, Help is appreciated:)

Answer 1

Total cost = cost of paper clips + cost of index cards
Total cost = cost of one box of paper clips * number of boxes + cost of one box of index cards * number of boxes

`55.40=15p+7i \\ 61.70=12p+10i \\ \\ 61.70-12p=10i \\ i = (61.70-12p)/(10) \\ i=6.17- (6p)/(5) \\\\ 55.40=15p+7(6.17- (6p)/(5))\\55.40=15p+43.19-(42p)/(5)\\55.40=15p-8.4p+43.19\\12.21=6.6p\\p=1.85 \\\\55.40=15(1.85) +7i\\55.40=27.75+7i\\7i=27.65\\i=3.95`
So your answers are:
p = $1.85
i = $3.95