SOLUTION: the ratio of the fertilizer was 5 parts nitrogen to ten parts all other ingredients. The farmer bought 135 pounds of fertilizer. How many pounds of nitrogen did he get?

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Question 1069007: the ratio of the fertilizer was 5 parts nitrogen to ten parts all other ingredients. The farmer bought 135 pounds of fertilizer. How many pounds of nitrogen did he get?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
5:10
They add to 15, and 135 pounds is 9 x 15.
Therefore, multiply both parts of the ratio by 9.
45:90 and there were 45 pounds of nitrogen.
Answer by ikleyn(52786)   (Show Source): You can put this solution on YOUR website!
.
the ratio of the fertilizer was 5 parts nitrogen to ten parts all other ingredients. The farmer bought 135 pounds of fertilizer.
How many pounds of nitrogen did he get?
~~~~~~~~~~~~~~~~~ 

"5 parts nitrogen to ten parts all other ingredients" means that you have 15 parts of equal mass.


Hence, each part mass is  = 9 pounds.


The farmer got 5 pats of nitrogen, which is 5*9 = 45 pounds.


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