Question

Two persons A and B together can do a work in 10 days the same work can be
finished in 18 days if A works alone for 12 days and B works alone for 6 days,
then
1) The time required for A to finish the work if he work alone is 15 days
2) The time required for B to finish the work if he work alone is 30 days
3) The time required for A to finish the work if he work alone is 20 days
4) The time required for B to finish the work if he work alone is 40 days​

Answer 1

Answer:

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