Question

Ex. 36. At a college football game,4/5 of the seats in the lower deck of the stadium were sold. If 1/4 of all the seating in the stadium is located in the lower deck, and if 2/3 of all the seats in the stadium were sold,
what fraction of the unsold seats in the stadium was in the lower deck?​

Answer 1

Answer:

the total number of seats =x

the lower deck of seat= x ×1/4 = x/4

unsold seats in the lower deck = 1/5× x/4 =x/20

x ×2/3 of whole the stadium

= x/20÷ x/3 = x/20 × 3/x =3/20.