Question

a shopkeeper earns a profit of rs 1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock. in a particular month she incurs a loss of rs 5.in a month she earns neither profit nor loss. if she sold 70 pens, how many pencils did she sell?​

Answer 1

Answer:

Step-by-step explanation:

The word pollution refers to the introduction of contaminants (pollutants) into the environment, having an adverse effect on it. Pollution is caused mainly due to human induced factors like – industrialization, deforestation, inefficient waste disposal etc. Pollution can be further classified into various categories like – water pollution, air pollution, noise pollution, plastic pollution, land pollution, light pollution, radioactive pollution etc. Hence pollution is a phenomenon having adverse effect on our natural resources – water, air etc or on overall environment.