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# A patient is given exactly 750 milliliters of a mixture

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Joined: 04 Jul 2005
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A patient is given exactly 750 milliliters of a mixture [#permalink]  05 Jul 2005, 11:37
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A patient is given exactly 750 milliliters of a mixture of two medications daily. Medication A contains 40 percent pain killer and medication B contains 20 percent pain killer. If the patient receives exactly 215 milliliters of pain killer daily, how many milliliters of medication B are in the mixture?

A. 150
B. 225
C. 325
D. 425
E. 550

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Joined: 18 Apr 2005
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Re: PS- Algebra [#permalink]  05 Jul 2005, 11:51
sklmf98 wrote:

A patient is given exactly 750 milliliters of a mixture of two medications daily. Medication A contains 40 percent pain killer and medication B contains 20 percent pain killer. If the patient receives exactly 215 milliliters of pain killer daily, how many milliliters of medication B are in the mixture?

A. 150
B. 225
C. 325
D. 425
E. 550

you need to solve a system of equations here for A and B

A + B = 750
0.4*A + 0.2*B = 215

find B
Re: PS- Algebra   [#permalink] 05 Jul 2005, 11:51
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