Question 63247
Let the amount invested at 3% be x
So  the amount invested at 2% = 3x

Interest on x at 3% for an year = PTR
                                = x*0.03*1
                                = 0.03x

Interest on 3x at 2% for an year = PTR
                                 = 3x * 0.02 * 1
                                 = 0.06x
Total interest = 270
==> 0.03x + 0.06x = 270
==> 0.09x = 270
==> 0.09x/0.09 = 270/0.09
==> x = 3000
So 3x = 9000

He invested 3000 at 3% and 9000 at 2%


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