6/7 ÷ 8/9 =
1 1/28
1 1/9
27/28
48/63
The Correct Answer is C
To divide 
by 
, we multiply 
by the reciprocal of 
:
÷ 
= 
× 
Now, perform the multiplication:
× 
= 
Simplify the fraction 
:
The greatest common divisor (GCD) of 54 and 56 is 2, so:
= 
Thus, the correct answer is:
So the correct choice is: 
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
To determine how long it takes to infuse 6 ml at an infusion rate of 1.5 ml per minute, follow these steps:
Calculate the infusion time using the rate and the volume to be infused:
Infusiontime = 
Plug in the values:
Infusiontime = 
Simplify the calculation:
Infusiontime = 4minutes
Therefore, the nurse should allow: 4 minutes for infusing 6 ml.
The correct answer is: 4 minutes
Correct Answer is B
Explanation
To determine the new infusion time when the rate is 20% slower, follow these steps:
Find the original infusion time:
The original time is 45 minutes.
Calculate the 20% slower rate:
A 20% slower rate means the time will be increased by 20%.
20% of 45 minutes is: 0.20×45=9minutes
Add the extra time to the original time:
The new infusion time is: 45minutes + 9minutes =54minutes
Therefore, the nurse should infuse the medication over: 54 minutes
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