exam Maths Puzzle Numerical Ability

Someone please help me solve this problem, I am going to have similar ones on a test. Find three consecutive even intergers such that three times the second minus the third is 12 more than the first.

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exam Other Question

Roberto invested some money at 7%, and then investes $5000 more than twice this amount at 11%. His total annual income from the two investments was $3450. How much was invested at 11%? A small flare is launched off the deck of a ship. The height of the flare above the water is given by h(t)=-4.9t^2+92t+9, where h(t) is measured in metres and t is time in seconds.