Answers by visitors named: hae

yup. For a piece of metal to rust fast, you need oxygen, water, and salt. Rusting occurs much more rapidly in moist conditions as compared to a dry environment such as a desert. Other factors like salt, O2 concentration also affect the rate of corrosion. The presence of salt enhances the rusting of metals because the dissolved salt increases the conductivity of the aqueous solution formed at the surface of the metal and enhances the rate of electrochemical corrosion. This is one reason why iron or steel corrode much more quickly when exposed to moist salty air near the ocean.

The information is not enough to solve the question. how can you have 3 unknowns, 2 equations, and solve all 3 unknowns.