Answer:
Step-by-step explanation:
2.5/8
(5/2) / 8
(5/2) * (1/8)
5/16
35.36 i think
40%x68=27.2
20%x27.2=5.44
27.2+5.44=32.64
68-32.64=35.36
$35.36
7 - n
(160+8)×4
is the answer