Question

A man buys 5 books and 10 pens for Rs. 3600.If a man sells books at 25%profit and. pens at 5%loss. If overall his oprodit is Rs. 540. Find the cost price of. books and pens?

Answer 1

Answer:

let books cost price be X,and pens cost price be y,

given,5X+10y=3600,let it be eqn 1,

given,books sold at 25%profit,i.e,1.25X,

pens sold at 5%loss,i.e,0.95y,

then,

5*(1.25X)+10*(0.95y)=3600+540(profit),

6.25X+9.5y=4140,let it be eqn 2,

by solving eqn 1 & eqn 2,

we get, X=480,y=120.

therefore,

cost price of each book is rs.480,

cost price of each pen is rs.120.