exam Maths Puzzle Numerical Ability

3. A group can charter an aircraft at a fixed total cost. If 36 ppl charter the aircraft rather than 40, then the cost per person is greater by $12. What is the cost per person if 40 people charter the aircraft?

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how can i use the ac test to determine which of the following trinomials can be factored and for each one how can i find m and n for each trinomials that can be factored.

1. 2p-6q+pq-3q^2

2. m^4-9n^4
Determine which two equations represent parallel lines.
(a) y = x + 4
(b) y = x - 7
(c) y = 2x + 8 (d) y = 2x - 4