Answer: 2.9 minutes.
Step-by-step explanation:
Given: Rate of filing the tank = 12 gallons per minute
Total volume of reservoir = 35 gallons
Time taken to fill the reservoir = 

hence, time taken to fill the reservoir = 2.9 minutes.
(34-12)÷2+7
22÷2+7
11+7
18
Hope this helps! If you want more details in case you don't understand, leave a comment, I'll reply as soon as possible! :)
3 packages because you'll have 15 beads left over. which would complete the use of the packages
Alright so this is how it works:
I use what's called the butterfly method
Step 1. Multiply the 1 and 9
Step 2: divide your result by 4
and then that's your answer
h= whatever the result was when you divided by 4