Answer: It will take the largest pipe 5.5 hours to fill the swimming pool alone.
It will take the smallest pipe 16.5 hrs to fill the swimming pool alone.
It will take the other pipe 11 hours to fill the pool alone.
Step-by-step explanation: let time needed to fill the swimming pool by the largest pipe be x ... eq (1)
Let time needed to fill the swimming pool by the smallest pipe be 3x ... eq(2)
Let time needed to fill the swimming pool by the other pipe be 2x ...eq(3)
The job to be done (to fill a swimming pool) be 3/x +3/3x+3/2x=1 ... eq(4)
Multiply 6x on both sides you will get:
6(3)+2(3)+3(3)=6x
18+6+9=6x
33=6x
33/6=x
X=5.5hours
Substitute x=5.5 into EQ 2 and 3
3x=3×5.5=16.5hours
2x=2×5.5=11hours
Check: substitute the value of x into eq3/5.5+3/16.5+3/11
0.545+0.182+0.273=0.9997=1
If the band consists of 11 students and you have to choose 6 students for<span> the drumline for a football game, then you have to calculate the number of combinations:
</span>
.
Answer: 462 ways to complete the <span>drumline for a football game.</span>
Answer: I can't answer this
Step-by-step explanation:
Answer:
1/12 of the container of milk will be left in the container
Step-by-step explanation:
To solve the question, we first note the variables
Volume of milk available = 9/12 of a container
Volume of milk poured in a pan = 2/3 of a container
Quantity of milk left = Initial quantity of milk less the quantity poured out
That is 9/12-2/3 = 1/12 of the container of milk
This means that there will be only 1/12 of the container of milk left
