Solve the problem.EJ can overhaul a boat's diesel inboard engine in 30 hours. His apprentice takes 60 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?
A. 12 hr
B. 8 hr
C. 20 hr
D. 90 hr
Answer: C
Mathematics
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Write the given iterated integral as an iterated integral with the order of integration interchanged.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A rectangular box with square base and no top is to have a volume of 32 ft3. What is the least amount of material required?
A. 36 ft2 B. 40 ft2 C. 48 ft2 D. 42 ft2
Mathematics
Find the LCM for the following numbers: 6, 15
a. 3 b. 2 c. 15 d. 30
Mathematics
Solve the problem.Find the APR of a bond that doubles its value in 10 years. Round your answer to the nearest hundredth of a percent.
A. 5% B. 10% C. 7.5% D. 15% E. 12.5%
Mathematics