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An electrician uses tiny red,blue and yellow bulbs in a ratio 12:11:10 to light up an entire building.If 4752 bulbs were used in all,how namy red,blue and yellow bulbs were used?
December 2, 2015 at 10:36am
(12+11+10)*x = 4752 33x = 4752 x = 144 Red: 12*144 = 1728 Blue: 11*144 = 1584 Yellow: 10*144 = 1440
December 3, 2015 at 8:09am
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