adam, ben and charlie share money. adam has 1.5 times as much as ben, ben has 3 times as much as charlie. how much does charlie have?

Question

 I don't know how to solve this I think it is ratio please help me.

Answer 1

a= 1.5b = 1.5(3c) = 4.5c

b = 3c

a=4.5c

a:b:c = 1:1.5:4.5 or double them to eliminate decimals 2:3:9