you would do 7.8 times 0.5 and would get 3.9. You would add 7.8 and 3.9 and get 11.7 That is your answer
Answer:
You could set up this equation:
100 x = 1
x = 1 / 100
Therefore, x = .01
Step-by-step explanation:
Answer:
75 hours
Step-by-step explanation:
To solve this question, you need to find when will the volume of water inside the smaller tank equal to the larger tank. Seems there is a typo in the question since the smaller tank have bigger leak than the larger tank and its impossible to solve with this number. So, I will show you how to solve if the leak is 0.08 gallons per hour instead of 0.8 gallons per hour.
The smaller tank holds 28.2 gallons and leaking at 0.08 gallons per hour. If y=volume and x=time, then the equation for water volume inside the smaller tank will be:
y1= 28.2- 0.08x
The larger tank holds 31.2 gallons and leaking at 1.2 gallons per hour. The equation for water volume inside the larger tank will be:
y2= 31.2 - 0.12x
We want to find the time when the volume(y) of both tanks if equal, so
y1=y2
28.2- 0.08x= 31.2 - 0.12x
-0.08x + 0.12x= 31.2 - 28.2
0.04x= 3
x= 75
The volume of both tanks will be equal after 75 hours, after that the larger tank will have less water compared to the smaller tank because it leaks faster.
Step-by-step explanation:
the probability will be amount of green marbles over total amount of marbles
if there are 2 green marbles, and 10 total the probability is 2/10, or 20%
Answer:
7hr 12 min
Step-by-step explanation:
Given that
Bob can type 2 letters in 4 hours
while on the other hand bill can do it in six hours
We need to find out the no of hours in which they type 6 hours
So,
Bob's rate is
= 2 ÷ 4
= 1 ÷ 2 letter per hour
And,
Bill's rate is
= 2 ÷ 6
= 1 ÷ 3 letter per hour
Now
Together rate is
= 1 ÷ 2 + 1 ÷ 3 = 5 ÷ 6 letter per hour
We know that
rate × hours = production
Let us assume the hours be x
So,
(5 ÷ 6)x = 6
x = (6 ÷ 5) × 6
x = 36 ÷ 5
= 7 1 ÷ 5
= 7hr 12 min