exam Maths Puzzle Numerical Ability

tickets for homecoming dance cost $20 for a single ticket or $35 for a couple. ticket sales totaled $2280, and 128 people attende. how many tickets of each type were sold?

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How many liters of an 11% alcohol solution should be mixed with 60 liters of a 5% alcohol solution to obtain a mixture that is 7% alcohol? a motorist travels 337 miles while using 13.7 gallons of gasoline. find the gasoline consumption in miles per gallon to one decimal place.