A man sold a book at loss of 10 Had he sold it for 104rs more he would have earned

Let cost price be x,
selling price =90% of x(since he is having 10% loss)
90% of x +104 = 110% of x (since he is having 10% profit)

90% of x + 104 = 110% of x
110/100 * x - 90/100 * x = 104
x/5=104
x= 104*5=520
7 years agoHelpfull: Yes(9) No(0)
Adding rs104 to the current sp compensates the loss of 10% + gives a profit of extra 10%.
I.e. rs104 is 20% of the cp
So cp is rs520
7 years agoHelpfull: Yes(2) No(1)
90%c.p+104=110%c.p
or,20%c.p=104
or,c.p=10400/20=520
7 years agoHelpfull: Yes(2) No(0)
from this qustion, man is in loss of 10% which means he sold the book on 90% of its cost price , when he sold the book for 104rs more he earned 10%,which means he sold the book on 110% of its cost price means (110-20)%=20% of cost price of book is 104rs therefor cost price of book=104*5=520
7 years agoHelpfull: Yes(1) No(0)
B.520
let cp=x rs
at 10% loss s.p=90x/100
new s.p=(90x/100)+104
so (90x/100)+104=(110/100)*x
by soving we get x=520rs
7 years agoHelpfull: Yes(0) No(0)

A man sold a book at loss of 10%.Had he sold it for 104rs more, he would have earned a profit of 10% .find the cost price of the book

A.400rs
B.520rs
C.640rs
D.840rs