Question

4.
A number is first increased by 20% and the
resulting number is then decreased by 10%.
Find the overall change in the number as
percent. please explain step by step​

Answer 1

Answer:

there is 10% overall change in the number

Step-by-step explanation:

let the number be x

first 20% increase so,

x+20%

then 10% decrease so,

x+20%-10%

x+10%

there is 10% overall change in the number

Answer 2

Answer:

8% increase

Step-by-step explanation:

let number be 100

increased by 20%

100+20=120

then decreased by 10%

120×10÷100=12

120-12=108

first the number is 100

finally the number is 108

therefore 8% increase