Sanford can assemble a computer in 60 minutes. Colleen can assemble a computer in 40 minutes. If they work together, how many minutes does it take them to assemble a computer?
5 minutes
6 minutes
20 minutes
24 minutes

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im thinking 20 mins am icorrect?

to solve this, the easy way would be the product of the two divided by the sum of the two

so 60x40/60+40

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