exam Maths Puzzle Numerical Ability

tickets $20 for singles and $35 for couples, Sales $2280 and 128 people, how many of each sold?

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exam Other Question

A class assignment requires that a student work 4 problems from a collection of 12. How many ways are there to complete the assignment? A 18-FOOT LADDER IS LEANED AGAINST A WALL. IF THE BASE OF THE LADDER IS 7 FEET FROM THE WALL . hOW HIGH ON THE WAL WILL THE LADDER REACH?