Question

Chris is buying crates of fruit juice for a party. He needs to decide how many crates to purchase.
The formula for this scenario is a = zy

x , where

x = number of people at the party
y = number of cans of fruit juice per crate
z = number of crates
a = number of cans each person will drink

Rewrite the equation to solve for the number of crates of fruit juice Chris should order.
yz = ax
xz = ay

z = ax

y

az = xy