Answer: 90 stands
Step-by-step explanation:
Mistake was made in question. It should be, ''...which accounts for /...''
There are 30 stands and this translates to 1/3 of the total stands.
Assume the number of total stands is x:
1/3 * x = 30
x = 30 ÷ 1/3
x = 90 stands
