A number is decreased by 10% and then increased by 10% . The number so obtained is 10 less than the original number. what was the original number ?

A number is decreased by 10% and then increased by 10% . The number so obtained is 10 less than the original number. what was the original number ? Correct Answer 1,000

Let the number x. After decrease by 10%, the number is .90x then it is increase by 10% and becomes .90x × 1.1 = .90x Now, x - .99x = 10 ⇒ x = 1000
Bissoy MCQ

Related Questions

A number is decreased by 10% and then increased by 10% .The number so obtained is 10 less than the original number. What was the original number?
L is older than M and taller than N. O is younger than P, older than N and shorter than Q. R is older than S, younger than N, shorter than S and taller than Q. S is older than L, M, O, P, Q, R and S is necessarily false?
If w is 10% less than x, and y is 30% less than Z, then why is what percent less than xz?
If w is 10 percent less than x, and y is 30 percent less than z, then wy is what percent less than xz?
If w is 10% less than x and y is 30% less than z , then wy is what percent less than xz ?
if w is 10% less than x and y is 30% less than z , then wy is what persent less than xz ?
If w is 10 percent less than x, and y is 30 percent less than z , then why is what percent less than xz?
If w is 10% less than x and y is 30% less than z, then wy is what percent less than xz?
At a certain bookstore , the regular price of each book is 20 percent less than its list price. If during a sale the price of each book at the store was 15 percent less than its regular price, then the price of a book during the sale was what percent less than its list price ?
The salary of an employee is first decreased by 10% and then is increased by 25%. Find percent increase in his salary from the original salary.