<PRE><B>Question 833437</B>
The first plane has 117 more seats than the 2nd plane. The third plane has 18 fewer seats than the the second plane. The total number of seats is 405.Find the the number of seats for each plane.
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let x=number of seats on 2nd plane
x+117=number of seats on 1st plane
x-18=number of seats on 3rd plane
x+x+117+x-18=405
3x=306
x=102
x+117=219
x-18=84
number of seats on 2nd plane=102
number of seats on 1st plane=219
number of seats on 3rd plane=84</PRE>