Question

A shopkeeper earns a profit of Rs.10 by selling 1 pen and incurs a loss of Rs.5 per pencil, while selling pencils of her old stock. In a particular month she incurs a loss of Rs.50. In this period she sold 65 pens. How many pencils ded she sell in this period?

Answer 1

profit she earns by selling a pen -Rs.10

loss she has to bear by selling a pencil- Rs.5