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Alex can drive for 100 miles. First you do 30 - 18, which is 12. Divide 12 by 0.12 to get your answer, which is 100 miles. 

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Ritmeks

Alex would drive for 100 miles

The calculation is one as follows;

Alex rents a car for one day

The charge for the car is $18 plus $0.12 per mile

Alex wants to spend $30

The number of miles he will drive can be calculated as follows

= $30 - $18

= $12

= 12÷0.12

= 100

Hence if Alex spends $30 he will drive for 100 miles

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