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by vivek.kapoor83 » Wed Oct 01, 2008 12:39 am
Milk Fat

X gallons contain X/100 fat (fat = 1%)
Y gallons contain 2y/100 fat (fat =2%)
Z gallons contain 3z/100 fat (fat =3%)

total fat = x/100 + 2y/100 + 3z/100

x+y+z gallons contain 1.5*(x+y+z)/100 fat (fat = 1.5 %)

so x/100 + 2y/100 + 3z/100 = 1.5*(x+y+z)/100

multiply by 200

2x + 4y + 6z = 3(x+y+z) = 3x + 3y + 3z

x = y + 3z

Ans: a
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by stubbornp » Wed Oct 01, 2008 1:01 am
oa A
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