A and b together can complete a work in 15 days. a is 50 more efficient than b how long would a take to complete a work alone
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let a take X day to complete the work
then b will take 2X days to complete the work.
in 1 day A can complete 1/X work
In 1 day B can complete 1/2X work
in 1 day they both complete 3/2X work
1 work they can complete in 2X/3 days
2X/3=15
X=45/2
then b will take 2X days to complete the work.
in 1 day A can complete 1/X work
In 1 day B can complete 1/2X work
in 1 day they both complete 3/2X work
1 work they can complete in 2X/3 days
2X/3=15
X=45/2
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