a shopkeeper sold a pen at loss of 20%. if he had sold it for rs 10 more, he would have gain 5%.find the cost price of pen

let sp of a pen be x

loss=20%

then CP = ( SP * 100 ) / ( 100 – percentage loss )

= x*100/80

=1.25x

Again

if sp= x=10

then profit =5%

CP = ( SP * 100 ) / ( 100 + percentage profit )

= (x+10)*100/105

= 20x+200/21

as cp is equal

1.25x= (20x+200)/21

26.25=20x+200

6.25x=200

x=32

Step-by-step explanation:

the answer is a

step-by-step explanation:

39.00 x 24 = total installment price

carrying installment price - cash price

needed to save the .00/