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Principal = 102,000
Return - 11,320
Return = (principal x rate x time)/100
X = the amount invested at 14%
Then 102000- x = the amount invested at 10%
11320 = (x*14)/100 + (102000-x*10)100
x = 28,000
a) 28,000 is invested at 14%
74,000 is invested at 10%
b) The 14% investment is riskier so if all the money was in that account the investor could lose all his money.