Answer:
Given:
Cold water faucet fills the sink in 4 minutes.
Both faucets fills the sink in 3 minutes.
Let us assume that "t" be the time it takes hot water faucet in order to fill the sink.
Therefore;
<em>Rate for hot water faucet fills the sink =
=
</em>
<em>Rate at which cold water faucet fills the sink =
=
</em>
When both faucets are used , the rate at which they fill the sink is given as :
<em>
+
=
</em>
On solving the above equation, we get :
<em>
</em>
<em>∴
</em>
<em>Therefore, it takes 12 minutes for the hot water faucet to fill the sink.</em>
<em></em>
Answer: Middle class
Explanation:
Who are the middle class families?
This class ranges from individuals of the upper class and the working class which comprises of business people and professionals with their own close families.
Middle class consist of three subcategories:
1) Working Class these are the individuals who work physically at the respective industries where they are hired and they rate hourly for their monthly salaries.These are the people who usually haven't enrolled in further education such as college or who did not finish even high school.
2) Lower-Middle Class these are the group with some sort of educational background eventhough they don't have advanced certificate but they work in offices with much lesser income.
3) Upper-Middle Class these are professional individuals who hold higher position at the offices .
They have mostly enrolled in post graduate certificate or degrees .
Peer groups are most likely to influence political attitudes when the peer group is actively involved in political activities.
<h3>What are peer group?</h3>
Peer groups can be described as the group of individuals having the same interest as well as the same social view.
However , there are some factors that can influence peer group such as the political activities which is the way individual were able to perceive things in the group.
Read more on Peer groups here:
brainly.com/question/27728815
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They were ideal for farming; the lake and its marshy shoreline was rich in food: fish, ducks, frogs, and edible plants. They were easily defended, and was good for travel and transport.