RRB Government Jobs Exams

Find the equation of the line that passes through the point (1, 1) and is perpendicular to
the line through P and Q.

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RRB Other Question

Find the slope of the line through the points P and Q One night, a hotel manager rented 15 single rooms and 36 double rooms for a total of
3900 $ per night. The next night, he rented 27 single rooms and 30 double rooms for a
total 4120 $ per night.
a. How much does the manager charge for each type of room per night?