Question

in how many years will it take a certain investment to double itself if the interest is compounded annually a 6%​

Answer 1

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ᵗᵒ ᵘˢᵉ ᵗʰᵉ ʳᵘˡᵉ ᵒᶠ 72 ⁱⁿ ᵒʳᵈᵉʳ ᵗᵒ ᵈᵉᵗᵉʳᵐⁱⁿᵉ ᵗʰᵉ ᵃᵖᵖʳᵒˣⁱᵐᵃᵗᵉ ˡᵉⁿᵍᵗʰ ᵒᶠ ᵗⁱᵐᵉ ⁱᵗ ʷⁱˡˡ ᵗᵃᵏᵉ ᶠᵒʳ ʸᵒᵘʳ ᵐᵒⁿᵉʸ ᵗᵒ ᵈᵒᵘᵇˡᵉ, ˢⁱᵐᵖˡʸ ᵈⁱᵛⁱᵈᵉ 72 ᵇʸ ᵗʰᵉ ᵃⁿⁿᵘᵃˡ ⁱⁿᵗᵉʳᵉˢᵗ ʳᵃᵗᵉ. ᶠᵒʳ ᵉˣᵃᵐᵖˡᵉ, ⁱᶠ ᵗʰᵉ ⁱⁿᵗᵉʳᵉˢᵗ ʳᵃᵗᵉ ᵉᵃʳⁿᵉᵈ ⁱˢ 6%, ⁱᵗ ʷⁱˡˡ ᵗᵃᵏᵉ 12 ʸᵉᵃʳˢ (72 ᵈⁱᵛⁱᵈᵉᵈ ᵇʸ 6) ᶠᵒʳ ʸᵒᵘʳ ᵐᵒⁿᵉʸ ᵗᵒ ᵈᵒᵘᵇˡᵉ.