on an airplane that is two thirds-full, 20% of the passengers are boys, one -fourth of the passengers are women, one-eighth of the passengers are girls, and there are 68 men. how many seats are on the plane?

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.2 boys
.25 women
.125 girls
------add
.575 non men passengers
.
1-.575=.425 men passengers
let x= total number of passengers.
.425x=68
.425x/.425=68/.425
x=160 passengers
.
let s=total number of seats on the plane.
2s/3=160
2s/3*3/2=160*3/2
s=240 seats
.
Ed

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