5. What simple interest rate will Susan need to secure to make $2,500 in interest on a $10,000 principal over 5 years?
A. 4%
B. 5%
C. 6%
D. 7%
E. 8%
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3. Jim can fill a pool carrying buckets of water in 30 minutes. Sue
can do the same job in 45 minutes. Tony can do the same job in 1 ¨ö
hours. How quickly can all three fill the pool together?
A. 12 minutes
B. 15 minutes
C. 21 minutes
D. 23 minutes
E. 28 minutes
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