Question

The cost of TV increased by 20% and then decreased by 5% . Find percentage increase in the original cost??

Answer 1

Answer:

Solution

verified

Let the original price be x

Then increased to 20%⟹x+  

100

20

​

x=  

5

6

​

x

Then decreased to 30%⟹  

5

6

​

x−  

100

30

​

×  

5

6

​

x=  

25

21

​

x

So the net decrease is x−  

25

21

​

x=  

25

4

​

x

The percentage change is  

x

25

4

​

x

​

×100=16%

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