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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Please kindly help me. I am having problem with this question.

The length of the swimming pool is 2x-1 meters, and the width is x+2 meters. Write a polynomial that represents the areaa. Find the area if x is 5 meters.

Thank you in advance.
I have won 12,000.00 each yr for 10 yrs. At 12% interest how much has to be invested to have money for the payout?