Question

3. 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?
1) 1000 2) 1050 3 ) 1500 4)2000
5) None of these​

Answer 1

Answer:

1000

Step-by-step explanation:

decreased by 10%

1000-1000×10÷1000

1000-100

900

then increased by 10%

900+900×10÷100

900+90

990

first value-last value

1000-990=10