Mathematics, 07.10.2019 22:00 gwendallinesikes

Apool is filled by two pumps and drained by a third pump. the first pump is filling a third of the pool in 2.5 hours. the second pump is filling a fifth of the pool in 5 hours and 6 minutes. the third pump drains 338 gallons hourly. how many hours would it take all the pumps to fill the pool full together, if they operate simultaneously and the pool's capacity is 2550 gallons?

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Answer from: kbraggs13

25 h

Step-by-step explanation:

If the pumps work simultaneously you can add the rates, considering the third pump with a negative rate because it is draining the pool.

The rate is calculated as V/t

Where V is the volume filled or drained in a given time

First pump rate = 1/3 * 2550 / 2.5 = 340 gallons / h

5 hours and 6 minutes = 5 + 6/60 = 5.1 h

Second pump rate = 1/5 * 2550 / 5.1 = 100 gallons / h

Third pump rate = -338 gallons / h

Total rate = 340 + 100 - 338 = 102 gallons /h

Time needed to fill the pump = 2550 / 102 = 25 h

Answer from: Quest

the clues that signal the reader should change tone are the punctuation marks, the grammatical signs. for example, the quotation marks at the beginning of something someone else said literally or the exclamation marks.

the tone of the first line of dialogue until "gettysburg" is a kind tone, a tone of advise. the narrator is trying to the other person in doing something he or she obviously is finding hard to do by giving a piece of advise and bringing up a memory of a successful similar case.

the clue that the reader understand how to read the word "bang" is the exclamation mark. it gives the word a surprise tone, a strong accent.

the best tone for reading the word "bang" is an exciting tone, a surprise one, even a loud one.

the words that should be read with a formal tone are the ones that give factual information. the sentence: mister lincoln couldn't think of anything to say at the gettysburg" gives information about an event and it needs to be read formally, also, when the narrator wants to transmit calmness, a formal and slow tone is needed, because people also transmit messages with the vibrations of our voices and tones.

Answer from: Quest

A5 miles because when you look at the chart count how many times it goes into it i don’t even know wha,t i’m saying anymore mpbut long stor6 short it’s 5 miles
Josie and annie bffs. they looked at a map of their town and saw that each grid box represented 1 mi

Josie and annie bffs. they looked at a map of their town and saw that each grid box represented 1 mi

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Apool is filled by two pumps and drained by a third pump. the first pump is filling a third of the p...

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