exam Maths Puzzle Numerical Ability

Adult tickets for a play cost $11 and child tickets cost $10. If there were 23 people at a perfromance and the theater collected $246 from tickets sales, how mant childern attended the play?

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exam Other Question

Solve and check. 1s+s-6/2/3=4/1/3. I get the answer 5.5, but how do you check it. An employee who produces x units per hour earns an hourly wage of y = 0.50x + 7 (in dollars). Find the hourly wage for an employee who produces 12 units per hour.