3/7 (4/5) =
1/3
12/35
21/35
15/28
The Correct Answer is B
To find the result of 
× 
, multiply the numerators and the denominators:
× 
= 
= 
So the correct answer is: 
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To solve the expression 
- 
+ 
, follow these steps:
Find a common denominator:
The denominators are 3, 6, and 18.
The least common denominator (LCD) of 3, 6, and 18 is 18.
Convert each fraction to have the common denominator of 18:
= 
= 
= 
= 
isalreadyinthecorrectform.
Rewrite the expression with the common denominator:
– 
+ 
Combine the fractions:
– =
+ 
= 
= 
Therefore, the correct answer is: 
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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