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The water flow rate of a regular shower head is 3. 5 gallons per minute. At this rate it would cost $1. 90 for the water used for a 10 minute shower​

Sagot :

Using proportions, it is found that the cost of 1 gallon of water, rounded to the nearest cent, is of $0.05.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, we have that he uses 3.5 x 10 = 35 gallons for a 10 minute shower, which costs $1.9. Hence the cost of a gallon is of:

$1.9/35 = $0.05.

More can be learned about proportions at https://brainly.com/question/24372153

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