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Assoli18 [71]
3 years ago
11

If 6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in how many minutes​

Mathematics
2 answers:
Marianna [84]3 years ago
5 0

Answer:

<u>It'll</u><u> </u><u>take</u><u> </u><u>1</u><u>4</u><u>4</u><u> </u><u>minutes</u><u> </u><u>for</u><u> </u><u>5</u><u> </u><u>pipes</u><u>.</u>

Step-by-step explanation:

{ \sf{6 \: pipes = 120 \: mins}} \\ { \sf{5 \: pipes = ( \frac{6}{5}  \times 120) \: mins}} \\  \\  = { \sf{144 \: mins}}

but practically, it seems to be abnormal. if 6 pipes take 120 mins, 5 pipes must takes a time greater than 120 mins cause amount of water flowing to the tank is decreasing.

<em>B</em><em>u</em><em>t</em><em> </em><em>t</em><em>h</em><em>e</em><em>r</em><em>e</em><em> </em><em>i</em><em>s</em><em> </em><em>a</em><em> </em><em>p</em><em>o</em><em>s</em><em>s</em><em>i</em><em>b</em><em>i</em><em>l</em><em>i</em><em>t</em><em>y</em><em> </em><em>t</em><em>h</em><em>a</em><em>t</em><em> </em><em>p</em><em>r</em><em>e</em><em>s</em><em>s</em><em>u</em><em>r</em><em>e</em><em> </em><em>o</em><em>f</em><em> </em><em>w</em><em>a</em><em>t</em><em>e</em><em>r</em><em> </em><em>w</em><em>a</em><em>s</em><em> </em><em>i</em><em>n</em><em>c</em><em>r</em><em>e</em><em>a</em><em>s</em><em>e</em><em>d</em><em> </em><em>f</em><em>o</em><em>r</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>c</em><em>a</em><em>s</em><em>e</em><em> </em><em>o</em><em>f</em><em> </em><em>f</em><em>i</em><em>v</em><em>e</em><em> </em><em>p</em><em>i</em><em>p</em><em>e</em><em>s</em><em>,</em><em> </em><em>t</em><em>h</em><em>a</em><em>t</em><em>'</em><em>s</em><em> </em><em>w</em><em>h</em><em>y</em><em> </em><em>i</em><em>t</em><em> </em><em>t</em><em>a</em><em>k</em><em>e</em><em>s</em><em> </em><em>a</em><em> </em><em>t</em><em>i</em><em>m</em><em>e</em><em> </em><em>l</em><em>e</em><em>s</em><em>s</em><em> </em><em>t</em><em>h</em><em>a</em><em>n</em><em> </em><em>1</em><em>2</em><em>0</em><em> </em><em>m</em><em>i</em><em>n</em><em>s</em><em>.</em><em> </em><em>(</em><em>t</em><em> </em><em><</em><em> </em><em>1</em><em>2</em><em>0</em><em>)</em>

Pepsi [2]3 years ago
3 0

Answer:

144 minutes

Step-by-step explanation:

here we use inverse proportion because the more pipes there are the less time is needed

the formula for inverse proportion is <em>y = k/x</em>

first we need to find <em>k</em> which is the constant

if <em>y</em> is the number of minutes and <em>x</em> is the number of pipes we can substitute these into the formula like so: 120 = <em>k</em>/6

to find <em>k</em> rearrange the formula to get <em>k</em> = 6 * 120 = 720

now that we have <em>k</em> we can substitute 720 (<em>k</em>) and 5 (<em>x</em>) into <em>y = k/x</em>

<em>y</em> = 720 / 5

<em>y</em> = 144

<em>(y</em> is the number of minutes in this case so the answer is 144 minutes)

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