Practice Test Discussion | Study&Score

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Practice Test Discussion

Q)

When 'A' alone does a piece of work, he takes 25 days more than the time taken by (A+B) to complete that particular work while 'B' alone takes 49 days more than the time taken by (A+B) to finish the same work. A and B together will take what time to finish this work?

A)

35 days

B)

25 days

C)

15 days

D)

45 days

E)

None of these

Explanation

Here we can use the formula, $\sqrt{a b}$

here a=25, b=49

$= \sqrt{25 \times 49} = 5 \times 7 = 35 d a y s$

Hence option A is the correct.

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