Solve the problem.A particular computer takes 74 nanoseconds (ns) to carry out 5 sums and 9 products, and 64 nanoseconds to perform 4 sums and 8 products. How long does the computer take to carry out one sum and one product?

A. one sum: 6 ns
one product: 4 ns
B. one sum: 6 ns
one product: 8 ns
C. one sum: 4 ns
one product: 8 ns
D. one sum: 4 ns
one product: 6 ns


Answer: D

Mathematics

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