A contractor combined x tons of a gravel mixture that contained 10 percent gravel G, by weight, with y tons of a mixture that contained 2 percent gravel G, by weight, to produce z tons of a mixture that was 5 percent gravel G, by weight. What is the value of x?
(1) y = 10
(2) z = 16
Thanks,
Cappy
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What is the value of x? (Mixing Problem)
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amitansu
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The ans is D here.
From q : 10x+2y=5(x+y)
we need to find x...
from 1) : y=10 => 10x+2*10=5(x+10) so , x is solvable.
Sufficient
From 2) : z=16 i.e. x+y=16......... (1)
also we have, 10x+2y=5(x+y)
=> 10x+2y=5*16........(2)
comparing these above tow eq we can get the value of x.
Sufficient.
Amit
From q : 10x+2y=5(x+y)
we need to find x...
from 1) : y=10 => 10x+2*10=5(x+10) so , x is solvable.
Sufficient
From 2) : z=16 i.e. x+y=16......... (1)
also we have, 10x+2y=5(x+y)
=> 10x+2y=5*16........(2)
comparing these above tow eq we can get the value of x.
Sufficient.
Amit
