Let y be the cost of the pants.
We can use algebras to solve this,
from the given information, we can write the following equation:
y x 5/6 = 12.50
To calculate the amount of an item if the item is _____ (fraction) of another item, just multiply the fraction with the latter.
Now time to solve this.
Shift x( 5/6) to the other side, turning to ÷(5/6)
y = 12.5 ÷ 5/6
y = 15
Therefore, the cost of the pants are $15