Grams Gold
March 25th, 2004
Algebra (I’ll vote for the best answer) How many grams of pure gold must be mixed with 80 grams of 35% gold t?
~~~~I need it before 10:30PM
How many grams of pure gold must be mixed with 80 grams of 35% gold to produce a bracelet that is 90% gold?
Answer was 440
I need a COMPLETE STEP BY STEP SOLUTION
I’ll vote for the best answer
^^
Let the amount of 100% gold to be added be x gms.
x + 0.35 *80 = ( x +80) *0.90
x + 28 = 0.90x + 72
0.10x = 44
x = 44 /0.10 = 440 grams ANSWER
CHECK
100/100 X 440 + 35/100 X 80 = 440 + 28 = 468
468 / 440 + 80 = 468 /520 X 100 = 90%
311 Grams Gold Crown Donated to Sai Baba @ Shirdi.flv
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