Book Maths Puzzle General Ability General Knowledge

Rs. 25 are paid for a task which A can do in 32 days ,B in 20 days ,B and C in 12 days and D in 24 days.If A,B,C,D work together ,how much money should each recieve?

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Book Other Question

what number is 19550 more than 49680 in a 3 km race the speeds of A and B are in the ratio of 6:5 and A wins by 10 secs.what is the time taken by B to finish the race.also to end the race in dead heat what % of total distance A should give the start up to B