M is 30% of Q. Q is 20% of P. N is 50% of P. Find M:N ratio
Pick: A) 1 : 25 B) 2 : 25 C) 3 : 25 D) 4 : 25 E) 5 : 25

Rationale: let p be 100 n = 50 % of 100 ( p = 100 ) = 50 q = 20 % of 100 ( p = 100 ) = 20 m = 30 % of 20 ( q = 20 ) = 6 m : n = 6 : 50 m : n = 3 : 25 answer : c
Answer: C