exam Maths Puzzle Numerical Ability

the cost of medical care increased 142.2 points in a 6-year period. if the cost of medical care reached the 326.9 mark, what was it 6 years ago?

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Point z(-3,-2)is translated using the following mapping (x,y) -> (x+1,y+5) What are the coordinate of the image of z ? If 20 men assemble 8 cars in a day, how many men are needed to assemble 12 cars in a day?