quantum wrote:

Theater M has 25 rows with 27 seats in each row. How many of the seats were occupied

during a certain show?

(1) During the show, there was an average (arithmetic mean) of 10 unoccupied seats

per row for the front 20 rows.

(2) During the show, there was an average (arithmetic mean) of 20 unoccupied seats

per row for the back 15 rows.

Hope you like that one!

Stem :- Total number is seats = 25 * 27 = 675

To find :- No of seats occupied 'x'.

Option1 ) Avg of 10 unoccupied seats in the front row

Number of seats unocupied in the front 20 rows = 200 seats.

Total number of occupied seats = 675 -200 = 475 .

SUFF

Option 2 ) Avg of 10 unoccupied seats in the back 15 rows:- 20

Total number of seats unoccupied = 20 *15 = 300

Total number of occupied seats = 675 -300 = 375 .

SUFF

IMO = D