The simple interest on a sum of money is 4/9 of the principal and the number of years is equal to the rate percent. Find the rate and the time?\nOptions:\n(A) 6 2/3%\n(B) 6 2/8%\n(C) 6 9/3%\n(D) 6 2/3%\n(E) 6 2/1% OK. Let's think. Some random thoughts first:
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4/9 P = (P*R*R)/100\nR = 20/3 = 6 2/3% The answer: (A).
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