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A and B working together can complete the work in 24/7 days, if A had worked 100% more efficiently,the work would have been completed in 12/5 days. How many days does B alone take to complete the work?

sudoku was first designed in the 1970s (1) by a retired architect (2) and freelance puzzle Constructor, (3) No error (4),       Answer is (4)  , can you explain it, why we did not use the first

How can i get mocks for IBPS SO

Piyali moves 100m North from her house, turns right and after going 100m reach her friend's house. From there they went to the market which is south east of her friend's house and East of her own house. Find the distance between piyali's house and the market.

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I have a doubt in this question please tell the correct answer for this with proper explaination.  

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What is the expected level of RBI GRADE B OFFICER EXAM?

I need derivation and explanation for the formula distance is equal to the (product of the speeds / difference in speeds ) * (change in time)