document.write( "Question 805745: How much of a cream base must be mixed with 20g of 0.5% dexamethasone and 75g of 0.025% of dexamethasone and 30g of 0.05% dexamethasone to make 0.02% of dexamethasone cream ?\r
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document.write( "My own calculation : 20g x 0.5% = 0.1
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document.write( " 75g x 0.25% = 0.1875
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document.write( " 30g x 0.05% = 0.015
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document.write( " 20g + 75g + 30g = 125
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document.write( " 0.1 + 0.1875 + 0.015 = 0.3025/ 0.02% = 1512.5
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document.write( " 1512.5 - 125 = 1387.5g
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document.write( " But the right answer 1375g Who solve it for me \n" );
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Algebra.Com's Answer #485458 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! {Amount of pure dexamethasone}/{Amount of mixture}={Target concentration value of dexamethasone}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The cream base contains 0% dexamethasone, so adding the cream base affects the denominator but not the numerator.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "LET w = grams of cream base to add to the other given quantities containing the dexamethasone. \n" ); document.write( " \n" ); document.write( "Solve for w. \n" ); document.write( " |