Question

at is 40% more efficient than b and both together complete a work in 9 3/8
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Answer 1

Answer:

question is very confusion

Answer 2

A is *40% more than B ( important note its 15 days (A minus 40% = A 9 days) & Not A 9 days *plus 40% )

B takes 6 days more than A to complete a work alone.

A complete the whole work = 9 days (B + 40%)

B = 15 days which is 6 days and more 40% more than A 9 days

However if question is correctly worded ?.

If A is genuinely 40% more than this does change to B = 21 days with A = 15 days

This provides 6 days more and if A is 40% more B 15 days plus 40% = 21 days.

So depending on the questioner stating A is 40% more than B

Anyway two Answers for two different Questions depending on the way its actually interpreted of ‘A is 40% more’.

Both answers satisfy both outcomes