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Leni [432]
3 years ago
8

A new type of pump can drain a certain pool in 3 hours. An older pump can drain the pool in 9 hours. How long will it take both

pumps working together to drain
the pool?
Mathematics
2 answers:
stepladder [879]3 years ago
7 0
Together the pool can be drained in 2 hours and 18 minutes.
Or if im correct 4.5 hours
ale4655 [162]3 years ago
6 0

Answer: Together the pool can be drained in 2 hours and 18 minutes.

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What is the expression if you for 45 minutes a day
dezoksy [38]
The question is unclear.
5 0
3 years ago
when camping alone , mr adam uses all of the water in 12 days, then when mrs adams and mr adams camp together they use all of th
professor190 [17]

Using the together rate, it is found that if Mrs Adams camps alone, she will use all the water in 24 hours.

<h3>What is the together rate?</h3>

The together rate is the sum of each separate rate.

In this problem, the rates are:

  • Together: 1/8.
  • Mr Adam: 1/12.
  • Mrs Adams: 1/x.

Hence:

\frac{1}{12} + \frac{1}{x} = \frac{1}{8}

\frac{x + 12}{12x} = \frac{1}{8}

12x = 8x + 96

4x = 96

x = \frac{96}{4}

x = 24

If Mrs Adams camps alone, she will use all the water in 24 hours.

More can be learned about the together rate at brainly.com/question/25159431

6 0
2 years ago
At the start of the week a bookshop had science and art books in the ratio 2:5. By the end of the week, 20% of each type of book
Anastaziya [24]
Let there be 2x science and 5x art books 
<span>science books sold = 2x × 0.2 = 0.4x </span>
<span>science books unsold = 2x – 0.4x = 1.6x </span>

<span>art books sold = 5x × 0.2 = x </span>
<span>art books unsold = 5x – x = 4x </span>

<span>total books unsold = 1.6x + 4x = 5.6x </span>
<span>5.6x = 2240 </span>
<span>x = 400 </span>

<span>2x science = 800 </span>
<span>and 5x art books = 2000 </span>
5 0
3 years ago
Is (p3)4 • p8 = p20 true or false ?
Oduvanchick [21]
P3(4) = p12 them p12 * p8 = P160 (false)
8 0
2 years ago
Which is the graph of y = -1/x?
olchik [2.2K]

C would be your answer.

7 0
2 years ago
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