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
10 times 3 is 3000...so the number 3 would have to be in the thousandths place...for e.g. 93,750
The student got 32 questions correct.
40 x 0.8 = 32
Answer:
answer is 10
Step-by-step explanation:
(4x+12)+(4x+12)+(5x+26)=180[sum of isosceles triangles]
8x+34+5x+26=180
X=10
Answer:
13:30 military time, 1:30 normal time.