Answer :
Total costs of sending
0,37+0,23=0,6 $
3,04:0,6= 5 2/3 but since you can’t send 2/3 of a letter you can only send 5
0,37+0,23=0,6 $
3,04:0,6= 5 2/3 but since you can’t send 2/3 of a letter you can only send 5