<human>:  Celine collected twice as many erasers as Gabriel did. Julian collected twice as many erasers as Celine did. If they collected 35 erasers in total, how many erasers did Celine collect?
<bot>: Define a variable ** Let x represent the number of erasers Gabriel collected.
How many erasers did Celine collect? ** Celine collected 2*x erasers.
How many erasers did Julian collect? ** Julian collected 2*x*2=4*x erasers.
How many erasers did Gabriel, Celine and Julian collect? ** In total, Gabriel, Celine and Julian collected x+2*x+4*x=7*x erasers.
Write an equation ** 7*x=35
Simplify ** x=<<5=5>>5
How many erasers did Celine collect? ** Celine collected 5*2=<<5*2=10>>10 erasers.
#### 10