Reverse compound interest excel formula? | Math Forums Hi, is there a way to find out the annual compound interest (A), from the interest (I) over (Y) number of years? For example: If interest over 5 years is 300%, so I=5, Y=3 0, how can I calculate A=? Thanks in advance
help me find out what formulas to use for these | Math Forums Future value formula right? OP puts $15,000 in a C O D that paid a continuous compound interest rate After 25 years the investment tripled Use this information to find the interest rate that was given Compound interest formula? Any problem with the words "sinking fund" means you use the future value formula right?
(1 = i) (1 + i) ^n | Math Forums On compound interest tables, I have seen just (1+i) without the P used In addition to being goofy, the second factorization is flat out wrong (P + P) n ≠ P (1 + i) n Perhaps working towards an understanding of the formula rather than blind symbolic manipulation would be better time t = 0 bank balance P time t = 1 bank balance P + i P = P
Compound interest and annuity - Math Forums Amortization formula: A = P i (1 + i) n (1 + i) n 1 where: {A = periodic payment P = amount of loan i = periodic interest rate n = number of periods} W\!e are
Annual growth rate | Math Forums According to my formula of %change the answer should be 6320% but the correct answer is 81% Does anyone understand why and could they explain? Thank you! View attachment 19122 A "correct answer" of 81% seems to suggest that the compound interest formula was used where 3 21 = 0 05 (1 + i) 7 and i = (3 21 0 05) 1 7 − 1 ≈ 0 812254929405
Calculate his balance after 12 years. | Math Forums Are you told that this is "simple interest"? That is what you calculated but that would be very strange for bank interest "Compound interest" would be would be 130 (1 06)^ {12}
Understanding negative exponents in regards to a PV formula To get future value, we multiply periodic payments by the interest rate (compounded effective int rate? I forgot the term, but you get the periodic interest rate, compound it for nt periods and subtract the original 1) so this equals periodic interest payments and we divide periodic interest payments by the periodic interest rate
Help | Math Forums At a certain rate of compound interest, money will double in x years, money will triple in y years, and money will increase tenfold in z years At this same rate of compound interest, \\$5 will increase to \\$12 in n years Find integers a, b, and c so that n = ax + by + cz