Well first 9450/5=1890 then 1890/6= 315 watt hours per day
4+7=11
11/2=5.5
round to the nearst whole number
Answer:
3 gallons
Step-by-step explanation:
Let
x ----> the amount of pure acid (100% solution) in gallons
Remember that



we know that

solve for x


therefore
3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 60% acid solution