Question 1193301

Please help me with the homework
1. R2000 invested on the 6 march 2016 at simple interest rate of 15% p.a. accumulated to R2240. Calculate the date on which this transaction matured.

2. A certain amount of money was invested on the 3 march 2016 at a simple interest rate of 12%p.a. and accumulated to R612 on the 2 may 2016. How much was the money?
<pre>For 2., the invested amount accumulated to R612. With the term/time
being 2 months, or {{{matrix(1,6, 2/12, or, (1/6)^(th), of, a, year)}}}, we get the following:  {{{matrix(4,3, A, "=", P(1 + RT), 612, "=", P(1 + .12(1/6)), 612, "=", P(1 + .02), 612, "=", P(1.02))}}}
                                                 Amount invested, or {{{highlight_green(matrix(1,5, P, "=", 612/1.02, "=", highlight("R600"))))}}}</pre>