Respuesta :
Answer:
9% or 0.09
Step-by-step explanation:
so 1800/4000 is .45 then we do .45/5 which is 0.09 and if u wanna double check do 4000 x 0.09 then that gives us 360 then we do 360 x 5 for 5 years that you've been investing which leaves us with 1800 which is the interest you got.
Answer:
5%
Step-by-step explanation:
4000 × 9 × r = 1800
r = 1800/36000
r = 0.05 × 100
5%