Question

People use water to​ cook, clean, and drink every day. An estimate of 15.4​% of the water used each day is for cooking. If a family uses 69.3 gallons of water a day for cooking​, how many gallons do they use every​ day?

Answer 1

Answer:

They use 450 gallons every day.

Step-by-step explanation:

This question can be solved using a rule of three.

69.3 gallons is 15.4% = 0.154. How many gallons is 100% = 1?

69.3 gallons - 0.154

x gallons - 1

$0.154x = 69.3$

$x = \frac{69.3}{0.154}$

$x = 450$

They use 450 gallons every day.

Answer 2

Answer:

$\frac{x}{100} = \frac{69.3}{15.4}$

Where x represent the total amount of gallons used everyday. And solving for x we got:

$x = 100* \frac{69.3}{15.4}= 450 gal$

So then everyday we will expect using about 450 gallons of water

Step-by-step explanation:

For this case we can use a proportional rule. We know that 15.4​% of the water used each day is for cooking and the amount using for cooking is 69.3 gallons. So we can set up the following equation:

$\frac{x}{100} = \frac{69.3}{15.4}$

Where x represent the total amount of gallons used everyday. And solving for x we got:

$x = 100* \frac{69.3}{15.4}= 450 gal$

So then everyday we will expect using about 450 gallons of water