A number is decreased by 35% and then increased by 40%. The number so obtained is 81 less than the original number. What was the original number?
Answer & explanation
Correct answer: option 3
Actual No. : New No.
-25% 20 : 13
+25% 5 : 7
Total Effect 100 : 91 ⇒ 9 (decrease)
9 unit = 81(Given)
1 unit = 9
Original no. is = 100 Units = 100 × 9 = 900