Last week, Angelica worked for (A) 24 hours.
What is work?
- Work is the energy transferred to or from an object by applying force along a displacement in physics. 
- In its most basic form, it is frequently represented as the product of force and displacement. 
- A force is said to do positive work if it has a component in the direction of the displacement of the point of the application when applied.
-  A force does negative work if it has a component that is opposite the direction of displacement at the point of application of the force.
To find out how many hours Angelica work last week:
- If Angelica worked an hour, then Raul worked a + 11 hours.
- Total hours worked = a + a + 11 = 59
- So, 2a = 48
- Then, a = 24 hours.
Therefore, last week, Angelica worked for (A) 24 hours.
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