40 is subtracted from 70% of a number, the result is 30. Find the number?  Choose the correct choice from the following choices:
A) 150
B) 997
C) 266
D) 288
E) 100

Rationale: "( 70 / 100 ) * x – 40 = 30 7 x = 700 x = 100 answer : e"
Answer: E