Question

A number is first reduced by 10% and then it is again increased by 10%. Then the number is changed by
a.1% increase
b.10%decrease
c.10%increase
d.1%decrease​

Answer 1

Answer:

Let the number is 100

If it reduce by 10% then the new number is 100−10=90

If it increased again by 10% then then=10% of 90

⇒10/100 ×90=9

∴New number=90+9=99

Total decrements=

100−99/100 ×100 =1