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[" Two workers "A" and "B" are engaged to do a work.A working alone takes "8" hours more "],[" to complete the job than if both worked together.If "B" worked alone,he would need "],[4(1)/(2)" hours more to complete the job than they both working together.What time would "],[" they take to do the work together? "],[[" (c) "4" beys "," (b) "5" hours "," (c) "6" hours "]]

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Two workers A and B are engaged to do a piece of work. Working alone, A takes 8 hours more to complete the work than if both worked together. On the other hand, working alone, B would need 4(1)/(2) hours more to complete the work than if both worked together. How much time would they take to complete the job working together?

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