Alberto, Benjamin and Carlota made a total of 20 sandwiches.
Benjamin did 3 times as much as Alberto, and Carlota did twice as much as Benjamin.
How many sandwiches did Alberto make?
a) 2
b) 4
c) 5
d) 6
e) 10
C : B : A = 6 : 3 : 1
20 / 10 = 2
Alberto made only 2 sandwiches.
+51 
