Question Sally has invested a constant amount at the end of every six months for the last $40$ years. She has made wise investment decisions and has earned a return of $16\mathrm{.}4\%$ compounded semi$-$annually. Today the value of her savings has reached $$2,500,000.$ What amount has she been investing every half$-$year? a $$61,983\mathrm{.}84$ b $$91\mathrm{.}66$ c $$5,834\mathrm{.}15$ d $$375\mathrm{.}29$ Question $4(1$ point$)$ Sally has invested a constant amount at the end of every six months for the last $40$ years. She has made wise investment decisions and has earned a return of $16\mathrm{.}4\%$ compounded semi$-$annually. Today the value of her savings has reached $$2,500,000.$ What amount has she been investing every half$-$year? a $$61,983\mathrm{.}84$ b $$91\mathrm{.}66$ c $$5,834\mathrm{.}15$ d $$375\mathrm{.}29$