Question

if pencils are purchased at the rate of 5 for a rupee how many must be sold for 1/- to get a gain of 25%

Answer 1

CP=5 pencils for 1/-
     =1 pencil for 1/5 /-=0.2 /-
Gain %=25%
∴SP=(100+25)/100×0.2
       =125/100×0.2
       =Rs 0.25 per pencil
Penicls for 1 /- = 1/0.25=4

4 pencil can sell for 1 /-