One fourth of one third of two fifth of a number is 10. What will be40% of that number	Choose the correct choice from the following answers
A) 140
B) 150
C) 120
D) 200
E) 220

Rationale: "explanation : ( 1 / 4 ) * ( 1 / 3 ) * ( 2 / 5 ) * x = 10 then x = 10 * 30 = 300 40 % of 300 = 120 answer : option c"
Answer: C