book Maths Puzzle Numerical Ability

factorise 8 x^2+10xy

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book Other Question

Hi there,

I don't get this problem with extraneous solutions at all! Could someone please help me work out this problem before class?
2m / 5 = 3m / 2

Thank you
AC An Investment of $3000 is made at an annual simple rate of 9%. How much additional money must be invested at an annual simple interest rate of 10.8% so that both accounts earn the