Cargo ships arrive at a loading dock at a rate of 2 per day. The dock has the capability of handling 3 arrivals per day. How many days per month (assume 30 days in a month) would you expect the dock being unable to handle all arriving ships

4 days

Step-by-step explanation:

Kindly check attached picture for detailed explanation

The important thing to notice here is that angle FHG is equal to angle JHK due to vertical angles.  That means we have two angles and a side that are equal to each other.

So the two triangles are congruent due to Angle Side Angle.

The answer is C.