1.

If 25% of a certain work is done by A and after that remaining was done by B, the work will be completed in 20 days. If 75% of the work is done by A and the remaining is done by B, the work will be completed in 30 days. If A and B work together, in how many days work will be completed?

Answer»

10.5
10
12
18

Answer :A


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