exam Maths Puzzle Numerical Ability

Karl determined that the ratio of trucks to cars sold at his car dealership last month was 3 to 7. If a total of 210 trucks and cars were sold last month, how many cars were sold?

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x+4 - 2x+3
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x^2-x-2 - x^2+2x-8 How many pounds of seed worth $0.60 a pound must be mixed with 300 pounds of seed worth $0.35 a pound to produce a mixture worth $0.50 per pound?



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