Answer:
C
Step-by-step explanation:
We need to find 30% of 20 gallons.
1) We can write a proportion
20 gallons ---- 100%
x gallons --------30%
x = 20*30/100 = 6 gallons
2) Or we can write 30% as decimal.
30% = 30/100 = 0.3
0.3 of 20 = 0.3*20 =6 gallons
Answer 6 gallons are used efficiently.
214 grams......(t.i.d.) means 3 times per day.....214/3 = 71.33 per dose
71.33/34 = 2.09......so that is 2 tabs per does.......that would be 6 tabs per day....6 x 30 = 180.....180 tabs for a 30 day supply
