For taking a bath, water at 40C is required. Calculate the mass of cold water at 15C which is to be added to 60 kg water at 100C for bathing purpose.

light rays enter the eye through the cornea, the clear front first understand how the eye enables us to see, and what role the cornea plays in eye at different angles, and do not focus on one point the retina, but on many we can tolerate very large scars on our bodies with no concern except for our vanity.

c would be the answer