Question

Medal for help please:) Look at example below

Answer 1

@campbell_st @Abhisar

Answer 2

@DW101796

Answer 3

Total number of people = 10, number of CD =C
So number of DVD = 10-c

Answer 4

Ok

Answer 5

Cost of 1 CD = $12, cost of C CDs = C*12

Answer 6

Total cost = 12C + (10-C)20
=12C + 200 - 20C
=200-8C

Answer 7

got it ?

Answer 8

Wow yes you made that so easy I get mixed up with these types of problems Ty did you see the other one I posted , I need help with that one too. Can you help :)?

Answer 9

which one ?

Answer 10

post it as a new one !
Multiple questions in a thread is against COC

Answer 11

kk