exam Maths Puzzle Numerical Ability

solving inequalities:

1/5 (20x + 15)>15

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exam Other Question

A group of people want to share equally the cost of a $200,000 airplane. They want to find 5 more people to join their club so that the cost per person decreases by $2000. How many people are currently in the club? what is sixteen less than the product of five and some number m is 159, how would you write it as an equation?