Problema Solution
Flying on a recent trip to Las Vegas two-thirds of the planes seats were occupied.
20% of the occupied seats were boys, one-fourth of the occupied seats were
women, one-eighth of the occupied seats were girls, and 68 of the occupied seats were men.
How many seats are on the plane?
How many seats are on the plane?
Answer provided by our tutors
let
x = the total number of seats on the plane
(2/3)x = the number of occupied seats
0.20*(2/3)x + (1/4)(2/3)x + (1/8)(2/3)x + 68 = (2/3)x multiply both sides by 1/(2/3)
0.20x + 0.25x + 0.125x + 102 = x
by solving we find
x = 240 seats
there are 240 seats in the plane.