to mail a letter,the post office charges a flat rate of $0.34 and $0.21 for each ounce. it costs $1.18 to mail your letter how many ounces does your letter weigh ?PLS show work

1) She can buy three packages and have no beads left over

2) $16.5

Step-by-step explanation:

1)

a. You would first have to find when each values will equal

beads | packages

12  |  20

24  |  40

36    | 60

48

60

b. Now you know that she can buy 3 packages

2)

a. To find the value you will simply multiply the number of packages she needs to the cost

b. 5.50* 3= 16.5

Hope this helped. :)