Question

A shop keeper sells a book at 15% gain had he sold it for 18 more, he would have gained 18%

Answer 1

Answer:

Cost price is Rs.600.

Step-by-step explanation:

Given : A store keeper sells a book at 15% gain .Had he sold it for 18 more,he would have gained 18%.

⇒To find: The cost price of the book?

★Solution :

⇒Let the CP of book be x.

★A store keeper sells a book at 15% gain

⇒ P=15/100x =3/20x

¹

★He would have gained 18%

⇒P=18/100x=9/50x

²

★According to question,

⇒P -P=18

¹ ²

⇒9/50x -3/20x=18

⇒3/100x= 18

⇒ x=18x/3

⇒x=600

⇒Therefore, Cost price is Rs.600.

★⇒hope.it helps you