A girl was asked to multiply a certain number by 43. She multiplied it by 34 and got his answer less than the correct one by 1242. Find the number to be multiplied.	Choose the correct choice from the following answers
A) 130 B) 132 C) 134 D) 136 E) 138

Rationale: "let the required number be x . then , 43 x – 34 x = 1242 or 9 x = 1242 or x = 138 . required number = 138 . answer : e"
Answer: E