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Ella invests 2/7 of her money in stocks

Question: Ella invests 2/7 of her money in stocks and 1/3 in bonds. The rest she keeps in her savings account. What fraction of her money does she keep in savings?
A. 13/21
B. 5/21
C. 8/21
D. 2/21


Solution:

Ella invests 2⁄7 in stocks and 1⁄3 in bonds. Combine the fractions:
2⁄7 + 1⁄3 = 6⁄21 + 7⁄21 = 13⁄21
She keeps the remaining fraction in savings:
1 – 13⁄21 = 8⁄21

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