robot a takes 6 min to weld a fender robot b takes only 5 1/2 min to do the same job if they work together for 2 min how long will it take robot b to finish welding the fender by itself?
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robot a takes 6 min to weld a fender robot b takes only 5 1/2 min to do the same job if they work together for 2 min how long will it take robot b to finish welding the fender by itself?
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