Question

if one persan do work in 15 days, and
second person do work in 8 days. If they
work together in how many days
can
they complete work:​

Answer 1

Step-by-step explanation:

Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.