One evening 1600 concert tickets were sold for the fairmont summer jazz festival. tickets cost $25 for covered pavilion seats and $20 for lawn seats. total recipts $36,000. how many tickets of each type were sold? how many pavilion seats were? sold? how many lawn seats were? sold?

• 800 pavilion seats

• 800 lawn seats

Step-by-step explanation:

Let p represent the number of pavilion seats sold. Then 1600-p is the number of lawn seats sold. Total revenue is ...

25p +20(1600 -p) = 36000

5p + 32000 = 36000

5p = 4000

p = 800 . . . . . . . . . . number of pavilion seats sold

1600-p = 800 . . . . . number of lawn seats sold

You can work these problems in your head. Consider that all seats were sold at the lower price. Then revenue would be 1600·20 = 32000. It was 36000 -32000 = 4000 more than that. The difference in ticket price is 25 -20 = 5 dollars, so there must have been 4000/5 = 800 higher-priced tickets sold. (Compare this working to the math above. You will find it substantially similar.)

x is variable or an unknown value to find

example:

2x = 5 which means x = 3