Answer:
1/8
Step-by-step explanation:
300 is the original amount and 0.5 is the rate (a percent) which is deacying because it is less than 1
I think this is how you do it: You would multiply 3/8 to 3/4 min...then convert into decimal..and get 0.5 min.
It is 20 because if u divide 78 by 3.75 ( 3 3/4 ) than equals 20.8
