exam Maths Puzzle Numerical Ability

x+2/3=8/15

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exam Other Question

You plant a 4 foot maple tree that grows at a rate of 6 inches per year and a 2 foot birch tree that grows a t a rate of 8 inches a year. In how many years will they be the same height? What is that height? please help to solve

x + 3y = 7
xy = 2