If the time taken by pipe A is 7 hours more than time taken by A and B together and the time taken by B is 28 hours more than the time taken by A and B together. Find the time taken by A and B together.
Answer & explanation
Correct answer: option 1
A → 7 hours more
B → 28 hours more
(A+B)'s time = \(\sqrt {7 × 28}\)
= \(\sqrt {196}\)
= 14 hours