How many days does a scientist grow a culture of 3000 cells at 7% growth per day to increase the number of cells by 630?
2 days
3 days
8 days
10 days
The Correct Answer is B
To find out how many days it takes for a culture of 3000 cells growing at a rate of 7% per day to increase by 630 cells, follow these steps:
Determine the daily growth:
Daily growth rate=7%=0.07
Calculate the daily increase in cells:
Daily increase=3000×0.07=210 cells per day
Determine the total increase needed:
Total increase needed=630 cells
Calculate the number of days needed:
Number of days = 
Number of days = 
= 3 days
Therefore, the correct answer is: 3 days
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
To find the result of
× 
, multiply the numerators and the denominators:
× 
= 
= 
So the correct answer is: 
Correct Answer is A
Explanation
To find X in the equation 32=24%×X, we can set up the equation as follows:
32=0.24X
Solving for X:
X = 
Now, let's calculate this:
X = 32 ÷ 0.24 =133.333
Therefore, X is approximately: 133.3
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