Answer:
2.22 hours
Explanation:
If Sally can paint the office by herself in 5 hours, we can say that in one hour she paints 1/5 of the office.
On the other hand, Lucy paints the office in 4 hours, which means that, in 1 hour she paints 1/4 of the office.
Therefore, to know how much they would paint per hour working together, we are going to sum up the fractions they paint per hour:
Therefore, working together they will paint 
of the office in one hour.
Now we can establish a rule of three: if they paint 0.45 of the office in 1 hour, how long (x) will it take them to paint 1.0 of the office?
And therefore 
Therefore, it will take them 2.22 hours to paint the office working together.
Answer:
in an urban area Migration results in a more dense population
less job availabilities
less housing
easy transportation
I'm rural areas migration can result in
more spacious area
poor transportation
less gorvernment facilities/infrastructure
harder labour
do I need to explain more because I think these are just examples
a general increase in prices and fall in the purchasing value of money:
The ancient society that observed monotheism, belief in only one god is option b) Jews.
The Jews have been believing that the supreme power is only one and hence have been practicing monotheism. They have been long since ages followed this tradition along with Islam, Christianity, Judaism etc.
Monotheism is the tradition of believing one god or one power different from that of polytheism. However, it is not the oneness but the uniqueness that counts in monotheism. Many at times it is considered as just numbers, as one god vs many gods or goddess. This it oversimplified and is mistaken often by people.
To know more about monotheism visit:
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The more Carbon Dioxide in the air, the more it increases the GREENHOUSE EFFECT.
