SOLUTION: 1) How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons with no ethanol to get a mixture that is 4%?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: 1) How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons with no ethanol to get a mixture that is 4%?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 261739: 1) How many gallons of gasoline that is 6% ethanol must be added to 2,000 gallons with no ethanol to get a mixture that is 4%?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.06x+2000*0=(2000+x)*.04
I get 4000 gallons.
Reminder website rules
one problem per submission
limit 4 submissions daily and
no similar problems
(2) Kaz and his girlfriend Cora are 10 miles apart and cant wait to see each other. Kaz has a mountain bike, while Cora is on roller blades. Kaz can ride at an average speed of 14mph, and cora can average 6 miles per hour on blades. How long will it take them to meet?

14t+6t=10
20t=10
t=1/2 hour