Answer:
Y=20
Step-by-step explanation:
90= (4y+10)
90-10=4y
80=4y
Y=80/4= 20
256.5/18= 14.25
(14.25x2)+(18x2)= 64.5m
Answer: $7
Step-by-step explanation: if a stapler cost $3, then 20staplers will cost $60
Amount left will be $200-60=$140
Cost of one organiser will be $140/20
That will be $7