When a number is successively decreased by 15 percent, 80 percent and 44 percent, then it becomes 19992. What is that number?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 210000.
let's assume the given number is x.
According to the questions,
⇒ x × (100 - 15)/100 × (100 - 80)/100 × (100 - 44)/100 = 19992
⇒ x × (85)/100 × (20)/100 × (56)/100 = 19992
x = 199920000/952 = 210000