Question

Match the information about interest earned with the principal amount invested. Remember the equation for calculating simple interest is I equals p times r times t .


seventy-two dollars over 3 years at an interest rate of three percent


sixty-six dollars over 2 years at an interest rate of three percent


seventy-two dollars over 2 years at an interest rate of four percent


seventy-two dollars over 3 years at an interest rate of two percent



A.
p equals nine hundred dollars
B.
p equals one thousand two hundred dollars
C.
p equals one thousand one hundred d

Answer 1

Did you try this?

Answer 2

the first one would be interest earned is 72, principal we have to find, rate is .03 and time is 3 years.

Answer 3

\[72=P(.03)(3)\]

Answer 4

P=800

Answer 5

Why do you only have 3 answers for 4 problems?

Answer 6

I put the last one but it wont show it was ( D.
p equals eight hundred dollars )

Answer 7

Can you try the next one and tell me what you get and I will check it.

Answer 8

66(.3)(2) i did this but i got 39.6 :\

Answer 9

\[66=P(.03)(2)\]\[\frac{66}{(.03)(2)}=P\]
\[1100=P\]

Answer 10

am I adding the (.03) (2) together and then dividing it by 66?

Answer 11

No. Let's take some simpler numbers and see if you can understand.
What if I have 12 = 2x Could you solve that? And how would you do it?

Answer 12

6 12 ÷ 2 = 6?

Answer 13

Yes. look at what I am going to draw.