Answer:
24.83 hours
Step-by-step explanation:
Given that :
Let time taken by pumps be :
Pump A = 60 hours
Pump B = 80 hours
Pump C = 90 hours
Recall :
Rate = 1 / time taken
The rates of the pumps are :
Pump A rate = 1 / 60
Pump B rate = 1/80
Pump C rate = 1/90
Combined rate : 1/60 + 1/80 + 1/90
Combined rate = (12 + 9 + 8) / 720 = 29/720
Combined rate = 29/720
The time taken together will be :
1 / combined rate = 1/(29/720) = 720 / 29 = 24.827 hours
Answer:
Step-by-step explanation:
First, let's introduce a variable:
Let n represent the number we are trying to find.
20 % x n = 58
0.20 x n = 58
0.20n = 58
n = 290
Therefore, 58 is 20% of 290.
Hope this helps!
Message me if you have any questions. :)
Hey there! Your answer is:
F.) -14
Here's why:
The higher a number goes when it's negative the smaller the number is. The higher a number goes when it's not a negative number the bigger it is.
I hope this answer helped you out! Have a great day/night :)
