A number is first decreased by 28% and then increased by 28%. The number so obtained is 784 less than the original number. Find the value of the original number.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 10000.
Given that
A number is first decreased by 28% and then increased by 28%
Let the original number be N
According to the question
⇒ N - N × 72/100 × 128/100 = 784
⇒ 10000N - 9216N = 7840000
⇒ 784N = 7840000
⇒ N = 10000