Answer:
6 percent
Step-by-step explanation:
1 ) 360/9 = 40 - 40 dollars earned per month
2) 40 x 12 = 480 - earned per year
3) 6000/9 = 666.67 x 12 = 8000 per year
4) 480/8000 = 0.06 / 6 percent
Lets check: 6000 x 1.06 = 6360 which is the amount of interest she gets paid in 9 months
