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Let P be the amount of invested money. Then, .08P = 336 P = 336/.08 = 4,200
A compound interest calculator is used for determining how much your invested money can make you in it's lifetime of being invested. This is useful in telling you how much a certain amount of money will make you when it matures.
x = amount of money invested at 5% y = amount of money invested at 4% x=2y .05x+.04y=350 .05(2y)+.04y=350 .1y+.04y=350 .14y=350 y=$2500 x=$5000
There is 936.76
p = principal ie amount invested; r = annual rate of interest; t = time in years. interest receivable = (p x t x r)/100