The ratio by weight, measured in pounds, of books to clothes to electronics in a suitcase initially stands at 7:4:3. Someone removes 8 pounds of clothing from the suitcase, thereby doubling the ratio of books to clothes. How many pounds do the electronics in the suitcase weigh? Choose the correct option:
A) 6	B) 8	C) 10	D) 12	E) 14
The weights of the items in the suitcase are 7k, 4k, and 3k.   If removing 8 pounds of clothes doubles the ratio of books to clothes, then 8 pounds represents half the weight of the clothes.   2k = 8 pounds and then k = 4 pounds.   The electronics weigh 3(4) = 12 pounds.   The answer is 12.
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The ratio by weight, measured in pounds, of books to clothes to electronics in a suitcase initially stands at 7:4:3. Someone removes 8 pounds of clothing from the suitcase, thereby doubling the ratio of books to clothes. How many pounds do the electronics in the suitcase weigh?