The principal on Marcus' savings account is $4,500. The APR is 5.3%. What is the simple interest after 30 weeks?

The principal on Marcus’ savings account is said to be 4 500 dollars

I think APR means annual percentage rate which is said to 5.3%.

Now, the question is, what is the simple interest that Marcus will earn after 30 weeks?

=> 30 weeks is equals to 6 months approximately.

Let’s solve first the annual interest

=> 4 500 dollars *.053 = 238.5 APR

=> 238.5 / 2 = 119.25

Thus, marcus will earn 119.25 dollars interest in 30 weeks.