A number is subtracted from 4 times of it and then, the number obtained is added to its (the resultant’s) next number. If this gives the answer as 91, what was the original number?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 15.
Let the original number be x.
According to the question;
1. 4x - x = 3x
2. 3x + (3x + 1) = 91
⇒6x = 90
⇒x = 15
Hence, the number is 15.