Test: ISEE Upper Level Math

1.

Machine A can produce 4 buttons in 2 days.  Machine B can produce 20 buttons in 4 days.  How many buttons can Machine A and B, working together, produce in 40 days?

\dpi{100} 7

\dpi{100} 70

\dpi{100} 280

\dpi{100} 200

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