Biology, 28.09.2019 11:30 seymani2

In a science class students water a plant with the same amount of water each day for 28 consecutive days if the students use a total of 23.8 liters of water over 28 days how many liters did they use each day

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Answer from: chaanah

The correct answer would be 0.85 liters.

It can be explained with the help of unit rate that is, when the rate is expressed as the quantity of 1 for example, 5 meter per second, 5 liters per day et cetera.

In this case, unit rate (liter per day) can be calculated by dividing the total amount of water used by total number of days.

Amount of water used in 28 days = 23.8 liters

The amount of water used in one day = $\frac{23.8}{28}$

It comes out to be 0.85 liters per day or 850 milliliter per day.

Answer from: ellycleland16

They use 0.85 liters each day to water a plant

Further explanation

Comparison is an effort to compare two or more objects in terms of shape or size, or number

Proportional Comparisons / Directly proportional are comparisons of two or more numbers where one number increases, the other numbers also increase at the same rate

Can be formulated

$\displaystyle \frac {x1} {y1} = \frac {x2} {y2}$

so that if:

x = 2

then

$\displaystyle y ={ \frac {y} {x} \times \: 2}$

While the reversal value comparison / inversely proportional is the comparison of two or more numbers where one number increases, the other number decreases in value

or when one value decreases at the same rate that the other increases

Can be formulated

$\displaystyle \frac {x1} {y2} = \frac {x2} {y1}$

so that if:

x = 2

then

$\displaystyle y = \frac {x} {y} \times \: 2$

The students use a total of 23.8 liters of water over 28 days

we translate this sentence into equation, :

23.8 liters = 28 days

? liter = 1 day

we can make a comparison(Directly proportional)

$\displaystyle \frac{1~day}{28~day} =\frac{x~liters}{23.8~liters}$

$\displaystyle x~liters=\frac{1~day\times23.8~liters}{28~day}$

$\large{\boxed{\bold{x=0.85~liters}}}$

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Keywords: water, a plant, liters, Proportional Comparisons / Directly proportional

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