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14 gallons for dollars. 8 gallons for $24.72

Can you please tell me what d means??

asked Jan 14, 2016 in PRE-ALGEBRA by anonymous

1 Answer

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Cost of 8 gallons quantity is  $24.72.

Cost of 14 gallons quantity is  dollars.

Find the value of .

A proportion is an equation stating that two ratios are equal.

Thus, if the four variables and are in proportion then .

Here and .

From the definition of  proportion of ratios, .

When the two ratios are equal then cross product of the ratios are equal.

Find the value of  by cross multiplication.




Here  is the cost of 14 gallons quantity  43.26 dollars.

answered Jan 18, 2016 by cameron Mentor
edited Jan 18, 2016 by cameron