Mathematics · Time and Work
A and B can finish a work in 6 days. If A works at double his normal speed and B works at one-third of his normal speed, they will complete the work in 4 1 2 days. How many days will it take for B to complete the work at his normal speed, working alone?
- 112
- 218
- 310
- 415✓
Correct answer
15
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