algebra
posted by lee .
rice are $2.00 per lbs. and sugar are $4.00 per lbs. I bougth a total of 10 pounds of both for $27.00 How many pounds of each did i get?

r+s=10
2r+4s=27
Multiply the first equation by 2 to cancel the r's.
2r2s=20
2r+4s=27
2s=7
s=3.5
Put s back into either original equation to solve for r (the first one would be easier).