Question

twelve men can complete a job in 15 days how many men will required to finish the work in 9 days the answer is 20 i know the answer but i dont know how to put step by step​

Answer 1

ATQ----------

15 days = 12 men

1 day = 12×15 men

9 days = 12×15/9 men

= 4×5 = 20 men

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Answer 2

ATQ

$15days = 12men \\ \\ 1day = 12 \times 15men \\ \\ 9days = 12 \times \frac{15}{9} men \\ \\ = 4 \times 5 \\ \\ = 20men.$

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