Your friend tells you that if you let her keep 2020 of your pokemon cards for three months, she will give you 22 cards extra when she returns your cards to you. what is the annual rate of interest she is willing to pay for the borrowed cards?

40 %

Step-by-step explanation:

Let the amount of one card = x

Hence, the value of 20 cards ( Principal amount ) = 20x

And, the value of 22 cards ( Total amount after 3 month ) = 22x

⇒ Total interest in 3 month = 22x - 20x =2x

Let the annual interest rate = r %

( By the formula of simple interest rate )

Hence, the annual rate of interest = 40%

ab: 2 n83b8eb7ebi. 8e yen in

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.