alleryStart learning →A's fixed rate is twice B's; B needs 30 days alone. 2 A-type workers plus B work independently. Days needed?
A5 days
B10 days
C15 days
D6 days
Answer & Solution
Correct answer: D. 6 days
Each A-type worker equals two B-type workers, so the team has five B-type rates and finishes in 30 ÷ 5 = 6 days.
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