Math, asked by sankarhal1991, 4 months ago

1. একটি কাজ A একা 20 দিনে এবং B একা 30 দিনে করতে পারে। তবে A ও B একত্রে
কাজটি কতদিনে করবে?

Answers

Answered by uddipan42

4

Answer:

Hope you understand. Here, (x * y)/(x + y)

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