anonymous
  • anonymous
Zach borrowed four thousand dollars from his grandfather to buy a used car so he could travel to and from work. After working for 3 years, he has saved five thousand nine hundred twenty dollars to pay back to his grandfather. At what interest rate did Zach borrow the money?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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apoorvk
  • apoorvk
i am assuming simple interest as you havent mentioned anything now principal amount=P=4000 rate of interest per annum=R=? t=no. of years borrowed for=3 now he is paying an interest of "I'=total final amount-borrowed principal= 1900 now I=(P x R x t)/100 1900=(4000x R x 3)/100 solve, you should get the rate of interest per annum. multiply by 100 to get interest %age.
LifeIsADangerousGame
  • LifeIsADangerousGame
I agree.^
anonymous
  • anonymous
lol life

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More answers

anonymous
  • anonymous
what does that equal btw
LifeIsADangerousGame
  • LifeIsADangerousGame
Whatever it should equal.
apoorvk
  • apoorvk
LOL
anonymous
  • anonymous
i need help again
LifeIsADangerousGame
  • LifeIsADangerousGame
Well it's true!
anonymous
  • anonymous
with? what@jack
anonymous
  • anonymous
understanding this guys answer...its right but what is the percentage
anonymous
  • anonymous
ooh a medal...thanks@life and jack
LifeIsADangerousGame
  • LifeIsADangerousGame
Cuz I'm awesome like that...Jack you need to figure out the answer Lazy Doctors now! Humph. I'll never go into surgery with you around! You might be too lazy to figure out if I need my lungs!
anonymous
  • anonymous
HAHAHAHAHAhah
anonymous
  • anonymous
u dont need your lungs id be happy to remove them heh heh heh
LifeIsADangerousGame
  • LifeIsADangerousGame
I'm pretty sure I need all 4 humph.
anonymous
  • anonymous
werewolf trash
anonymous
  • anonymous
LMAO
LifeIsADangerousGame
  • LifeIsADangerousGame
Dog poop!
anonymous
  • anonymous
hairball
LifeIsADangerousGame
  • LifeIsADangerousGame
Buttbreath!
anonymous
  • anonymous
WOW
anonymous
  • anonymous
buttbreath? thats pretty serious
anonymous
  • anonymous
your the dog not me
anonymous
  • anonymous
thats biskerz your lookin at
LifeIsADangerousGame
  • LifeIsADangerousGame
YOU JUTS SAID HAIR BALL! CATS get hairballs!
anonymous
  • anonymous
werewolfs get em too
LifeIsADangerousGame
  • LifeIsADangerousGame
So does your dog HAHAHA
anonymous
  • anonymous
no he doesnt take it back
LifeIsADangerousGame
  • LifeIsADangerousGame
NEVERRR
anonymous
  • anonymous
i hate u your not my fan anymore u insulted my cute dog
LifeIsADangerousGame
  • LifeIsADangerousGame
You insulted my werewolf lineage!
anonymous
  • anonymous
im sorry
LifeIsADangerousGame
  • LifeIsADangerousGame
ME too cabbagebrain..
anonymous
  • anonymous
what ever
LifeIsADangerousGame
  • LifeIsADangerousGame
I have several bees nest in my yard.
anonymous
  • anonymous
i gtg
anonymous
  • anonymous
bye jack
LifeIsADangerousGame
  • LifeIsADangerousGame
bye!
anonymous
  • anonymous
no more fighting now
anonymous
  • anonymous
Simple Interest formula: I = p r t <=> r = I/ p * t The difference amount between borrowed and paid back is the interest: I = $5,920 - $4,000 = $1,920 => Interest rate: r = 1,920 / 4,000 * 3 = .16 = 16%
anonymous
  • anonymous
i remember this from chat almost a month ago
anonymous
  • anonymous
XD that was amazing, and whats even better at the end the answer was there "16%"

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