While selling a watch,a shopkeeper gives a discount of 5%. If he gives a discount of 6%, he earns rs.15 less as profit. What is the Marked Price of the watch?

Question

How can i solve this question via effective percentage method?

 

Answer 1

 

So 6% of the principal is $15 greater than 5% of the principal.

 

Specifically, 6%-5% = 1% of the principal is $15.

 

0.01 X  = 15

 

 X = 1500

 

The watch is $1500

 

5% of 1500 = 75

6% of 1500 = 90

That's $15 difference

 

THe watch costs $1500