Three nurses work a combined total of 130 hours each week.

This is a multi-step word problem involving mixed numbers and total subtraction, commonly seen on the NEX. First calculate Nurse A’s total hours:. Multiply by 5 days:hours. Next, calculate Nurse B’s total hours:. Multiply by 4 days:hours. Now add the hours worked by Nurses A and B:

41.25 + 42 = 83.25 hours (or).

Subtract this from the total combined hours:

130 − 83.25 = 46.75 hours.

Convert 0.75 to a fraction:.

So Nurse C workedhours, making option D correct. The NEX often tests accurate step-by-step calculation with workplace scenarios.

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