Question

jaya sold a book worth rs. 200 at a profit of 20% to aryan .aryan sold it at a loss of 10% to garima.what did garima pay for that book

Answer 1

Amount of money he bought the book from Jaya =Rs.200 = Cp
Loss% Aryan got by selling the book to Garima = 10%
Amount of money Garima pay for the book =
When CP = 100,SP = 90
WHEN CP = 1,SP = 90/100
WHEN CP = 200,SP = 90/100×200
= RS.180
Garima paid Rs.180 for the book .
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Answer 2

According to question

Book cost price = rs. 200

Jaya sold the book to Aryan at 20% profit.

Aryan sold the book to Garima at a 10% loss.

Cost price for Garima =?

Jaya sold the book to Aryan at a 20% profit.

⇒20% of 200 = $\frac{20}{100}$ × $200$

⇒ 40

Cost price for Aryan = Rs. 200 + Rs. 40

⇒ Rs. 240

Aryan sold the book to Garima at a 10% loss.

⇒ 10% of 240 = $\frac{10}{100}$  × 240

⇒ 24.

Cost price for Garima = Cost price for Aryan - 10% of Cost price for Aryan

=Rs. 240 - Rs. 24

=Rs. 216

The cost price for Garima is Rs. 216

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