Solve the problem.A merchant has coffee worth $30 a pound that she wishes to mix with 30 pounds of coffee worth $80 a pound to get a mixture that can be sold for $60 a pound. How many pounds of the $30 coffee should be used?

A. 50 lb
B. 10 lb
C. 25 lb
D. 20 lb


Answer: D

Mathematics

You might also like to view...

Find the limit of the sequence or state that it diverges.

A. diverges B. 0 C. -1 D. 1

Mathematics

Use the graph to find a) the mode, b) the median, and c) the mean of the data, then, d) compare the measures of central tendency and describe any similarities or differences.

A. a) mode: 4 b) median: 4 c) mean: 4 d) The three measures of central tendency are the same. B. a) mode: 7 b) median: 7 c) mean: 7 d) The three measures of central tendency are the same. C. a) mode: 4 b) median: 7 c) mean: 7 d) The mode is less than the median or the mean. D. a) mode: 7 b) median: 4 c) mean: 4 d) The mode is greater than the median or the mean.

Mathematics

Use a calculator to approximate the square root to 3 decimal places. Check to see that the approximation is reasonable.

A. 29.000 B. 5.385 C. 5.390 D. 5.382

Mathematics

Use =, <, or > to write a true statement.-   - 

A. = B. > C. <

Mathematics