Pamela drove her car 99 kilometers and used 9 liters of fuel. She wants to know how many kilometers (k)left parenthesis, k, right parenthesis she can drive with 12 liters of fuel. She assumes the relationship between kilometers and fuel is proportional.
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For this problem you would need to set up a proportion. If Pamela can drive 99 km using 9 gallons of gas that can be set equivalent to x km with 12 gallons of gas. Your proportion would look like this...You would then cross multiply to set up the equation...You would then cross multiply to set up the equation...
99 km (12 gal) = 9 gal (x km)
Your final answer would be 132 km. To check that your answer is correct, simply plug 132 km back into your original proportion to make sure that both sides of the proportion equal one another.
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