Question

The formula for the amount with simple interest is A = P(1 + rt). Find t if A = 168, P = 150, and r = 0.08.

Answer 1

ok so first take the letters and replace them with their numbers what do you get?

Answer 2

I get 168=150(1+0.08t)

Answer 3

ok now divide both sides by 150

Answer 4

So I would divide 168/150 and 150/0.08 ?

Answer 5

168/150 is correct but on the other side you would get (150(1+.08t))/150

Answer 6

in other word the entire other side has to be divided by 150

Answer 7

see what i did?

Answer 8

Yes, I do.

Answer 9

ok so then theres a lil trick you can do when you have two of the same numbers divided by each other...

Answer 10

Cancel them out ?

Answer 11

ding ding ding!!

Answer 12

=P

Answer 13

((:

Answer 14

any trouble isa in Compounding and simple interest??

Answer 15

so what do you get?

Answer 16

Well I divided 168/150 = 1.12

Answer 17

ok.. so thats the left side.. and what about the right side that cancels out

Answer 18

the two 150's cancel out and you end up with...

Answer 19

I am cconfused :/

Answer 20

hehe its ok youll get it ill draw a pic

Answer 21

Alright. That may help