On a school trip to the seashore, Alan and his friends collected shells. Alan collected four times as many shells as Ben did. Ben got a late start and only collected a third of what Laurie did. If Laurie collected 36 shells how many did Alan collect?
Ben collected 36/3=<<36/3=12>>12 shells
Alan collected 12*4=<<12*4=48>>48 shells
#### 48