a.since
108-$25.18
1 diaper=?
$25.18 divided by 108=$0.233
b.since
180 - $39.14
1 diaper=?
therefore, $39.14 divided by 180=$0.217
c.since
160 diapers - $38.77
1 diaper will be $38.77 dollars divided by 160=$0.243
d.i will advice her to buy the third type of diapers since that contains many diapers
