Answer:
Z= 20
Y= 16
X= 12
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
.89 per pound
3.2 pounds
.89*3.2 = 2.85
Answer:
Option B. is correct
Step-by-step explanation:
Let 
denotes time taken by Mia alone to clean the room and 
denotes time taken by Holly alone to clean the room.
As Mia and Holly can clean their room in 20 min, working together,
Also,
Mia, working alone, can do the job in 30 min.
So,
Put (ii) in (i)
Therefore,
Holly can clean the room alone in 60 minutes.
Option B. is correct
4n-9=15. N=6 (n stands for number)
7 hrs per week on internet
9 hrs per week playing video games
thats a total of 16 hrs a week
5 hrs free time per day......thats (5 * 7) = 35 hrs free time per week
16/35 = 0.457 = 45.7% <==
