Question

a shopkpeer makes a profit of 15% by selling a book for rs ​

Answer 1

Given that the SP of a book =Rs.230

Profit%=15

Since

CP=(SP×100)÷(100+profit %)

CP=(230×100)÷(100+15)

CP=23000÷115=Rs.200

Also,

Profit=SP−CP=Rs.(230−200)=Rs.30

Actual profit=Rs.30

C.P.=Rs200,Profit=Rs30

Answer 2

Answer:

profit % = profit / cost price × 100%

15 /100 = profit / C. P.

15×(CP) / 100 = PROFIT

NOW

SP= CP + Profit

= CP + 15(CP)/100

= CP { 1 + (15/100) }

= [ 115 ×CP ] /100

SP = [ 115 × (CP) ] /100