Math, asked by sanjibchanak, 7 months ago

A ও B একত্রে একটি কাজ D দিন করে এবং A ওই কাজটি একা a দিনে করতে পরে। ওই কাজটি B এ্কা কতদিন লাগবে

Answers

Answered by schty96

0

Answer:

Da/(a-D)

Step-by-step explanation:

the answer is Da/(a-D)

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