Question

A football stadium holds 17,700 seats. The lower level has 300 seats less than 4 times the number of seats in the upper level. The middle level has 500 more seats than twice the number of seats in the upper level. Let x represent the seats in the upper level. Which equation can be used to find the number of seats in the upper level?

Answer 1

7x+200=17,700 because if you set up an equation for each level, the upper level is just x, the middle level is 2x=500, and the lover level is 4x- 300. if you add all 3 equations together and set it equal to 17,700, it equals 7x+200=17,700

Answer 2

Number of seats in upper level=2500

Explanation:

A football stadium holds 17,700 seats.

Let x represent the seats in the upper level.

The lower level has 300 seats less than 4 times the number of seats in the upper level.

That means seats in lower level=4x-300

The middle level has 500 more seats than twice the number of seats in the upper level.

Seats in middle level= 2x+500

Hence, total number of seats= x+4x-300+2x+500

= 7x+200

7x+200=17700

7x=17500

x=2500

Hence, number of seats in upper level=2500