# A theather has two levels of seating. level 1 has 80 more seats than level 2.

Altogether there are 320 seats on both levels. what is the equation that can be used to find the number of seats in level 2?

thesmartboy
09 June 2013
Let L be the number of seats on level 1 and U on level 2
Ian S.
09 June 2013
Equation 1 L = U +80 Possibly rearrange to L -U =80. Equation 2 : L + U =240. Solve using normal methods for simultaneous equations
Ian S.
09 June 2013
First look at what we knowLevel 2 = Level 1 + 80Level 1 + Level 2 = 320 Level 1 + Level 1 + 80 = 3202 x (Level 1) + 80
alrazi
17 June 2013
Let the number of seats on Level 2 be called x. The number of seats on Level 1 is 80 more than this, so we call it x+80. The total number of seats will be these two expressions, x and x+80, added together, which is 2x+80. We know the total number of seats is 320, so we know that 2x+80 = 320. We can then solve this, first by moving the 80 across. This gives 2x = 320-80, or 2x = 240. We then divide by 2 to find that x equals 120. This is the number of seats on Level 2. You should write down for your answer that the equation is (320-80)/2. I do hope this helps - feel free to message me if you'd like any further help. I'd be happy to work with you.
17:06 on 17/06/13
17 June 2013
sorry is there a way to edit?
alrazi
17 June 2013