Answer:
r= −100c+100d/ct
Step-by-step explanation:
d=c(1+rt/100)
1/100crt+c=d
1/100crt+c+−c=d+−c
1/100crt=−c+d
[tex]\frac{1/100crt}{ct/100}[/tex] = [tex]\frac{-c + d}{ct/100}[/tex]
