Answer:
Neither even or odd
Step-by-step explanation:
You just have to cross multiply. 20 x 285 = 5700. 5700 / 95 = 60.
He will run 60km
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
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