SOLUTION: A grain-storage warehouse has a total of 30 bins. Some hold 20 tons of grain each, and the rest hold 15 tons each. How many of each type of bin are there if the capacity of the war

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A grain-storage warehouse has a total of 30 bins. Some hold 20 tons of grain each, and the rest hold 15 tons each. How many of each type of bin are there if the capacity of the war      Log On


   

Question 71356This question is from textbook Algebra and Trigonometry
: A grain-storage warehouse has a total of 30 bins. Some hold 20 tons of grain each, and the rest hold 15 tons each. How many of each type of bin are there if the capacity of the warehouse is 510 tons? This question is from textbook Algebra and Trigonometry

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
20x+15(30-x)=510
20x+450-15x=510
5x=510-450
5x=60
x=60/5
x=12 bins for 20 tons
30-12=18 bins for 15 tons.
proof
20*12+15*18=510
240+270=510
510=510