Question

The
foci of the
Hyperbola X2/9-y2/16=1


​

Answer 1

Answer:

Step-by-step explanation:

Let the C.P. of the article be Rs. x.  

Then S.P. at a loss of 10%  

100

x×90

​  

= Rs.  

100

90x

​  

 

S.P. at a gain of 12  

2

1

​  

%=  

100

x×112.5

​  

= Rs.  

100

112.5x

​  

 

Given,  

100

112.5x

​  

−  

100

90x

​  

=9

⇒  

100

22.5x

​  

=9

⇒x=  

22.5

900

​  

 = Rs. 40